403 lines
26 KiB
JSON
403 lines
26 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-105280",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-10-08T13:45:02.134Z",
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"datePublished": "2026-10-12T15:30:14.126Z",
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"dateUpdated": "2026-11-11T14:03:00.287Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"cpes": [
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"cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Mix.Tasks.Hex.Package'",
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"'Elixir.Hex.SCM'"
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],
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"packageName": "hex",
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"packageURL": "pkg:otp/hex?repository_url=https:%2F%2Fgithub.com%2Fhexpm%2Fhex&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Fhexpm%2Fhex.git",
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"product": "hex",
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"programFiles": [
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"lib/mix/tasks/hex.package.ex",
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"lib/hex/scm.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mix.Tasks.Hex.Package':run/1"
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},
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{
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"name": "'Elixir.Hex.SCM':fetch/3"
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}
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],
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"repo": "https://github.com/hexpm/hex",
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"vendor": "hexpm",
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"versions": [
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{
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"lessThan": "2.5.2",
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"status": "affected",
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"version": "0.20.2",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Mix.Tasks.Hex.Package'",
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"'Elixir.Hex.SCM'"
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],
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"packageName": "hexpm/hex",
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"packageURL": "pkg:github/hexpm/hex",
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"product": "hex",
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"programFiles": [
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"lib/mix/tasks/hex.package.ex",
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"lib/hex/scm.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mix.Tasks.Hex.Package':run/1"
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},
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{
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"name": "'Elixir.Hex.SCM':fetch/3"
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}
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],
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"repo": "https://github.com/hexpm/hex",
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"vendor": "hexpm",
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"versions": [
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{
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"changes": [
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{
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"at": "8a14632ca6ba8a8afd2a3f2098bc267c13e13d93",
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"status": "unaffected"
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},
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{
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"at": "69489f8b74213f03db10169e6e5407e6d5fee512",
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"status": "unaffected"
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}
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],
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"lessThan": "*",
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"status": "affected",
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"version": "d1f5a085d9d4748e1f7d195e4bc39ebd77c28d9c",
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"versionType": "git"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Affects <code>mix hex.package fetch</code> with <code>--output -</code> when packages are downloaded through a mirror set with <code>HEX_MIRROR_URL</code> or <code>mirror_url</code>. Downloads directly from the repository over HTTPS aren't affected unless TLS verification is broken.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Affects `mix hex.package fetch` with `--output -` when packages are downloaded through a mirror set with `HEX_MIRROR_URL` or `mirror_url`. Downloads directly from the repository over HTTPS aren't affected unless TLS verification is broken."
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}
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],
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"value": "Affects mix hex.package fetch with --output - when packages are downloaded through a mirror set with HEX_MIRROR_URL or mirror_url. Downloads directly from the repository over HTTPS aren't affected unless TLS verification is broken."
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:hexpm:hex:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "2.5.2",
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"versionStartIncluding": "0.20.2",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Eric Meadows-Jönsson"
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},
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{
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"lang": "en",
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"type": "analyst",
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"value": "Jonatan Männchen / EEF"
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}
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],
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"dateAssigned": "2026-10-10T13:01:30.000Z",
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"datePublic": "2026-10-12T15:30:14.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Improper Validation of Integrity Check Value vulnerability in hexpm hex allows a package mirror to substitute the tarball that <code>mix hex.package fetch PACKAGE VERSION --output -</code> writes to standard output.</p>\n<p>Hex compares a fetched tarball's inner and outer checksums with the repository's signed registry before writing it to a file or unpacking it. The standard output branch of <code>mix hex.package fetch</code> writes the bytes returned by <code>Hex.SCM.fetch/3</code> without that comparison, and <code>Hex.SCM.fetch/3</code> doesn't verify freshly downloaded tarballs itself. When a mirror configured with <code>HEX_MIRROR_URL</code> or <code>mirror_url</code> serves altered bytes, the command prints them and exits successfully, while the same fetch with <code>--output FILE</code> fails with a checksum mismatch.</p>\n<p>Hex also prints diagnostics to standard output while the command runs: the body of a failed HTTP response from the update check or a registry fetch, and API warnings from the <code>x-hex-message</code> header. A mirror that answers one of those requests with an error whose body is a tar archive gets that archive written to standard output ahead of the verified tarball, so a pipeline that unpacks standard output extracts the mirror's files. This happens even when the checksum check then fails, because the archive is already on standard output.</p>\n<p>This issue affects hex: from 0.20.2 before 2.5.2.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Improper Validation of Integrity Check Value vulnerability in hexpm hex allows a package mirror to substitute the tarball that `mix hex.package fetch PACKAGE VERSION --output -` writes to standard output.\n\nHex compares a fetched tarball's inner and outer checksums with the repository's signed registry before writing it to a file or unpacking it. The standard output branch of `mix hex.package fetch` writes the bytes returned by `Hex.SCM.fetch/3` without that comparison, and `Hex.SCM.fetch/3` doesn't verify freshly downloaded tarballs itself. When a mirror configured with `HEX_MIRROR_URL` or `mirror_url` serves altered bytes, the command prints them and exits successfully, while the same fetch with `--output FILE` fails with a checksum mismatch.\n\nHex also prints diagnostics to standard output while the command runs: the body of a failed HTTP response from the update check or a registry fetch, and API warnings from the `x-hex-message` header. A mirror that answers one of those requests with an error whose body is a tar archive gets that archive written to standard output ahead of the verified tarball, so a pipeline that unpacks standard output extracts the mirror's files. This happens even when the checksum check then fails, because the archive is already on standard output.\n\nThis issue affects hex: from 0.20.2 before 2.5.2."
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}
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],
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"value": "Improper Validation of Integrity Check Value vulnerability in hexpm hex allows a package mirror to substitute the tarball that mix hex.package fetch PACKAGE VERSION --output - writes to standard output.\n\nHex compares a fetched tarball's inner and outer checksums with the repository's signed registry before writing it to a file or unpacking it. The standard output branch of mix hex.package fetch writes the bytes returned by Hex.SCM.fetch/3 without that comparison, and Hex.SCM.fetch/3 doesn't verify freshly downloaded tarballs itself. When a mirror configured with HEX_MIRROR_URL or mirror_url serves altered bytes, the command prints them and exits successfully, while the same fetch with --output FILE fails with a checksum mismatch.\n\nHex also prints diagnostics to standard output while the command runs: the body of a failed HTTP response from the update check or a registry fetch, and API warnings from the x-hex-message header. A mirror that answers one of those requests with an error whose body is a tar archive gets that archive written to standard output ahead of the verified tarball, so a pipeline that unpacks standard output extracts the mirror's files. This happens even when the checksum check then fails, because the archive is already on standard output.\n\nThis issue affects hex: from 0.20.2 before 2.5.2."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-186",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Hex treats mirrors as untrusted and relies on registry signatures and checksums for package integrity. Scripts that pipe <code>mix hex.package fetch --output -</code> into another tool, such as an unpacker, a vendoring step or an installer, receive whatever the mirror served, so the mirror operator can deliver modified package contents that downstream steps treat as the published release.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Hex treats mirrors as untrusted and relies on registry signatures and checksums for package integrity. Scripts that pipe `mix hex.package fetch --output -` into another tool, such as an unpacker, a vendoring step or an installer, receive whatever the mirror served, so the mirror operator can deliver modified package contents that downstream steps treat as the published release."
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}
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],
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"value": "Hex treats mirrors as untrusted and relies on registry signatures and checksums for package integrity. Scripts that pipe mix hex.package fetch --output - into another tool, such as an unpacker, a vendoring step or an installer, receive whatever the mirror served, so the mirror operator can deliver modified package contents that downstream steps treat as the published release."
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "NETWORK",
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"baseScore": 6.9,
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"baseSeverity": "MEDIUM",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "HIGH",
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"userInteraction": "ACTIVE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "HIGH",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-354",
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"description": "CWE-354 Improper Validation of Integrity Check Value",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-11-11T14:03:00.287Z"
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},
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"references": [
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{
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"name": "GitHub Advisory",
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"tags": [
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"related",
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"vendor-advisory"
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],
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"url": "https://github.com/hexpm/hex/security/advisories/GHSA-98jr-23pm-vj7c"
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},
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{
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"name": "EEF CNA record for CVE-2026-105280",
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-105280.html"
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},
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{
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"name": "OSV record EEF-CVE-2026-105280",
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-105280"
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},
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{
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"name": "Introducing commit d1f5a08 in hexpm/hex",
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"tags": [
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"related"
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],
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"url": "https://github.com/hexpm/hex/commit/d1f5a085d9d4748e1f7d195e4bc39ebd77c28d9c"
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},
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{
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"name": "Fix commit 8a14632 in hexpm/hex",
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"tags": [
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"patch"
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],
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"url": "https://github.com/hexpm/hex/commit/8a14632ca6ba8a8afd2a3f2098bc267c13e13d93"
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},
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{
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"name": "Fix commit 69489f8 in hexpm/hex",
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"tags": [
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"patch"
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],
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"url": "https://github.com/hexpm/hex/commit/69489f8b74213f03db10169e6e5407e6d5fee512"
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}
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],
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"solutions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Upgrade Hex to 2.5.2 or later, for example with <code>mix local.hex</code>. <code>mix hex.package fetch PACKAGE VERSION --output -</code> then verifies the registry checksum before writing the tarball to standard output and prints its messages to standard error.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Upgrade Hex to 2.5.2 or later, for example with `mix local.hex`. `mix hex.package fetch PACKAGE VERSION --output -` then verifies the registry checksum before writing the tarball to standard output and prints its messages to standard error."
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}
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],
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"value": "Upgrade Hex to 2.5.2 or later, for example with mix local.hex. mix hex.package fetch PACKAGE VERSION --output - then verifies the registry checksum before writing the tarball to standard output and prints its messages to standard error."
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}
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],
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"source": {
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"discovery": "UNKNOWN"
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},
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"title": "Hex writes unverified package tarballs to standard output in mix hex.package fetch",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Write the tarball to a file with <code>--output FILE</code>, which verifies the checksums, and read that file instead of standard output.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Write the tarball to a file with `--output FILE`, which verifies the checksums, and read that file instead of standard output."
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}
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],
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"value": "Write the tarball to a file with --output FILE, which verifies the checksums, and read that file instead of standard output."
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}
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],
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"x_proofOfConcept": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<ol>\n<li>Set <code>HEX_MIRROR_URL</code> to a server that returns modified bytes for <code>tarballs/decimal-2.4.1.tar</code> and proxies everything else to repo.hex.pm.</li>\n<li><code>mix hex.package fetch decimal 2.4.1 --output -</code> prints the modified bytes and exits 0.</li>\n<li><code>mix hex.package fetch decimal 2.4.1 --output decimal.tar</code> fails with <code>Checksum mismatch against registry (outer)</code>.</li>\n</ol>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "1. Set `HEX_MIRROR_URL` to a server that returns modified bytes for `tarballs/decimal-2.4.1.tar` and proxies everything else to repo.hex.pm.\n2. `mix hex.package fetch decimal 2.4.1 --output -` prints the modified bytes and exits 0.\n3. `mix hex.package fetch decimal 2.4.1 --output decimal.tar` fails with `Checksum mismatch against registry (outer)`."
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}
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],
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"value": "* Set HEX_MIRROR_URL to a server that returns modified bytes for tarballs/decimal-2.4.1.tar and proxies everything else to repo.hex.pm.\n* mix hex.package fetch decimal 2.4.1 --output - prints the modified bytes and exits 0.\n* mix hex.package fetch decimal 2.4.1 --output decimal.tar fails with Checksum mismatch against registry (outer)."
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}
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],
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"x_technicalAnalysis": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<ol>\n<li><code>mix hex.package fetch PACKAGE VERSION --output -</code> calls <code>fetch_tarball!/3</code>, which calls <code>Hex.SCM.fetch/3</code>.</li>\n<li>For a fresh download, <code>Hex.SCM.fetch/3</code> writes the response body to the cache and returns it without comparing it to the registry checksum.</li>\n<li>The standard output branch passes those bytes to <code>IO.binwrite/1</code>. The file and <code>--unpack</code> branches call <code>verify_inner_checksum!/4</code> and <code>verify_outer_checksum!/4</code> first.</li>\n<li>While the task runs, Hex prints messages with <code>Hex.Shell.info/1</code>, which writes to standard output. <code>Hex.Utils.print_error_result/1</code> prints the body of an error response that way; the update checker calls it when its request for <code>installs/hex-1.x.csv</code> fails, and <code>Hex.Registry.Server</code> calls it when a registry fetch fails and the cached registry is used. <code>Hex.HTTP</code> prints the <code>x-hex-message</code> warning of each response the same way. These are printed before the tarball is written, so the mirror chooses bytes that come before the tarball on standard output.</li>\n</ol>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "1. `mix hex.package fetch PACKAGE VERSION --output -` calls `fetch_tarball!/3`, which calls `Hex.SCM.fetch/3`.\n2. For a fresh download, `Hex.SCM.fetch/3` writes the response body to the cache and returns it without comparing it to the registry checksum.\n3. The standard output branch passes those bytes to `IO.binwrite/1`. The file and `--unpack` branches call `verify_inner_checksum!/4` and `verify_outer_checksum!/4` first.\n4. While the task runs, Hex prints messages with `Hex.Shell.info/1`, which writes to standard output. `Hex.Utils.print_error_result/1` prints the body of an error response that way; the update checker calls it when its request for `installs/hex-1.x.csv` fails, and `Hex.Registry.Server` calls it when a registry fetch fails and the cached registry is used. `Hex.HTTP` prints the `x-hex-message` warning of each response the same way. These are printed before the tarball is written, so the mirror chooses bytes that come before the tarball on standard output."
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}
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],
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"value": "* mix hex.package fetch PACKAGE VERSION --output - calls fetch_tarball!/3, which calls Hex.SCM.fetch/3.\n* For a fresh download, Hex.SCM.fetch/3 writes the response body to the cache and returns it without comparing it to the registry checksum.\n* The standard output branch passes those bytes to IO.binwrite/1. The file and --unpack branches call verify_inner_checksum!/4 and verify_outer_checksum!/4 first.\n* While the task runs, Hex prints messages with Hex.Shell.info/1, which writes to standard output. Hex.Utils.print_error_result/1 prints the body of an error response that way; the update checker calls it when its request for installs/hex-1.x.csv fails, and Hex.Registry.Server calls it when a registry fetch fails and the cached registry is used. Hex.HTTP prints the x-hex-message warning of each response the same way. These are printed before the tarball is written, so the mirror chooses bytes that come before the tarball on standard output."
|
|
}
|
|
]
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-10-16T17:35:17.920015Z",
|
|
"id": "CVE-2026-105280",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"Automatable": "no"
|
|
},
|
|
{
|
|
"Technical Impact": "partial"
|
|
}
|
|
],
|
|
"role": "CISA Coordinator",
|
|
"version": "2.0.3"
|
|
}
|
|
}
|
|
}
|
|
],
|
|
"title": "CISA ADP Vulnrichment",
|
|
"providerMetadata": {
|
|
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
|
|
"shortName": "CISA-ADP",
|
|
"dateUpdated": "2026-10-16T17:37:21.498Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |