285 lines
14 KiB
JSON
285 lines
14 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-2026-82729",
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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": "2026-08-31T00:59:08.960Z",
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"datePublished": "2026-09-04T14:31:20.562Z",
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"dateUpdated": "2026-09-04T19:33:32.398Z"
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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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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Mint.HTTP1.Parse'",
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"'Elixir.Mint.HTTP1'"
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],
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"packageName": "mint",
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"packageURL": "pkg:hex/mint",
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"product": "mint",
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"programFiles": [
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"lib/mint/http1/parse.ex",
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"lib/mint/http1.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mint.HTTP1.Parse':chunk_size/1"
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},
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{
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"name": "'Elixir.Mint.HTTP1':decode_body/5"
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}
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],
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"repo": "https://github.com/elixir-mint/mint",
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"vendor": "elixir-mint",
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"versions": [
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{
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"lessThan": "1.10.0",
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"status": "affected",
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"version": "1.9.3",
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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:elixir-mint:mint:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Mint.HTTP1.Parse'",
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"'Elixir.Mint.HTTP1'"
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],
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"packageName": "elixir-mint/mint",
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"packageURL": "pkg:github/elixir-mint/mint",
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"product": "mint",
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"programFiles": [
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"lib/mint/http1/parse.ex",
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"lib/mint/http1.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mint.HTTP1.Parse':chunk_size/1"
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},
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{
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"name": "'Elixir.Mint.HTTP1':decode_body/5"
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}
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],
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"repo": "https://github.com/elixir-mint/mint",
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"vendor": "elixir-mint",
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"versions": [
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{
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"lessThan": "bd2a4e7513594997c140cfef9fe0e968712fb588",
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"status": "affected",
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"version": "fc7d16538db7e40b56ed489f08683225cb0197fa",
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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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"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:elixir-mint:mint:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.10.0",
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"versionStartIncluding": "1.9.3",
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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": "Tr3bor"
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},
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{
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"lang": "en",
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"type": "reporter",
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"value": "Tr3bor"
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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": "Andrea Leopardi"
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},
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{
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"lang": "en",
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"type": "coordinator",
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"value": "Jonatan Männchen / EEF"
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}
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],
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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>Inefficient Algorithmic Complexity vulnerability in elixir-mint mint allows a remote HTTP server to exhaust CPU on the client host and cause a denial of service.</p>\n<p><code>parse_hex_prefix/2</code> in <code>lib/mint/http1/parse.ex</code> folds each hex digit of a chunked response's chunk-size field into an arbitrary-precision accumulator with <code>acc * 16 + digit</code> and imposes no limit on the digit count. Because the accumulator grows without bound, the multiplication is not constant time and one pass over <code>N</code> digits costs O(N squared). <code>handle_data/2</code> prepends <code>conn.buffer</code> and re-parses from the start on every socket message, so a server that dribbles the digits out in small packets makes the client pay that cost repeatedly. A run of roughly 512,000 hex digits costs over ten seconds of CPU in a single pass, measured on stock defaults. The parser reaches this state after a valid status line and a complete, valid header section, so an intermediary inspecting only headers sees an ordinary 200 response.</p>\n<p>This issue affects mint: from 1.9.3 before 1.10.0.</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": "Inefficient Algorithmic Complexity vulnerability in elixir-mint mint allows a remote HTTP server to exhaust CPU on the client host and cause a denial of service.\n\n`parse_hex_prefix/2` in `lib/mint/http1/parse.ex` folds each hex digit of a chunked response's chunk-size field into an arbitrary-precision accumulator with `acc * 16 + digit` and imposes no limit on the digit count. Because the accumulator grows without bound, the multiplication is not constant time and one pass over `N` digits costs O(N squared). `handle_data/2` prepends `conn.buffer` and re-parses from the start on every socket message, so a server that dribbles the digits out in small packets makes the client pay that cost repeatedly. A run of roughly 512,000 hex digits costs over ten seconds of CPU in a single pass, measured on stock defaults. The parser reaches this state after a valid status line and a complete, valid header section, so an intermediary inspecting only headers sees an ordinary 200 response.\n\nThis issue affects mint: from 1.9.3 before 1.10.0."
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}
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],
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"value": "Inefficient Algorithmic Complexity vulnerability in elixir-mint mint allows a remote HTTP server to exhaust CPU on the client host and cause a denial of service.\n\nparse_hex_prefix/2 in lib/mint/http1/parse.ex folds each hex digit of a chunked response's chunk-size field into an arbitrary-precision accumulator with acc * 16 + digit and imposes no limit on the digit count. Because the accumulator grows without bound, the multiplication is not constant time and one pass over N digits costs O(N squared). handle_data/2 prepends conn.buffer and re-parses from the start on every socket message, so a server that dribbles the digits out in small packets makes the client pay that cost repeatedly. A run of roughly 512,000 hex digits costs over ten seconds of CPU in a single pass, measured on stock defaults. The parser reaches this state after a valid status line and a complete, valid header section, so an intermediary inspecting only headers sees an ordinary 200 response.\n\nThis issue affects mint: from 1.9.3 before 1.10.0."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-130",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-130 Excessive Allocation"
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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": 6.3,
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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": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "LOW",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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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-407",
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"description": "CWE-407 Inefficient Algorithmic Complexity",
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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": "2026-09-04T14:31:20.562Z"
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},
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"references": [
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{
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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/elixir-mint/mint/security/advisories/GHSA-7p8w-j234-7qc8"
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},
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{
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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-2026-82729.html"
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},
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{
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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-2026-82729"
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},
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{
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"tags": [
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"patch"
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],
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"url": "https://github.com/elixir-mint/mint/commit/bd2a4e7513594997c140cfef9fe0e968712fb588"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "Quadratic chunk-size parsing in Mint.HTTP1.Parse allows CPU-exhaustion DoS"
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-7p8w-j234-7qc8",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-09-04T19:33:08.928597Z",
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"id": "CVE-2026-82729",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-09-04T19:33:32.398Z"
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}
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}
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]
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}
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} |