281 lines
13 KiB
JSON
281 lines
13 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-2026-49754",
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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": "2026-06-01T13:45:22.448Z",
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"datePublished": "2026-06-02T14:15:14.951Z",
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"dateUpdated": "2026-06-02T19:14:33.100Z"
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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.HTTP2'"
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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/http2.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mint.HTTP2':handle_continuation/3"
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},
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{
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"name": "'Elixir.Mint.HTTP2':handle_headers/3"
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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": "1.9.0",
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"status": "affected",
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"version": "0.1.0",
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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.HTTP2'"
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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/http2.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Mint.HTTP2':handle_continuation/3"
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},
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{
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"name": "'Elixir.Mint.HTTP2':handle_headers/3"
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}
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],
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"repo": "https://github.com/elixir-mint/mint.git",
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"vendor": "elixir-mint",
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"versions": [
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{
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"lessThan": "b662d127d3028b5426c88d4c9cc7fe430491a10b",
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"status": "affected",
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"version": "596ca4304504be68939c4929e0831557097962b8",
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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": "1.9.0",
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"versionStartIncluding": "0.1.0",
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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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"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": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client (HTTP/2 CONTINUATION flood).<p>When Mint's HTTP/2 receive path observes a <tt>HEADERS</tt> frame without the <tt>END_HEADERS</tt> flag, the unparsed header-block fragment is parked in <tt>conn.headers_being_processed</tt>, and every subsequent <tt>CONTINUATION</tt> frame on that stream is appended to the accumulator. Nothing in the receive path caps the accumulator: there is no per-stream size limit, no <tt>CONTINUATION</tt> frame-count limit, and <tt>max_header_list_size</tt> is only enforced on outgoing requests, never on inbound header blocks (its default is <tt>:infinity</tt>).</p><p>A malicious or compromised HTTP/2 server can stream an endless sequence of <tt>CONTINUATION</tt> frames (each up to the peer-advertised <tt>SETTINGS_MAX_FRAME_SIZE</tt>) and drive the client's iolist to arbitrary size, causing memory exhaustion and BEAM process death. A single connection to an attacker-controlled HTTP/2 endpoint is sufficient.</p><p>This issue affects mint: from 0.1.0 before 1.9.0.</p>"
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}
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],
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"value": "Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client (HTTP/2 CONTINUATION flood).\n\nWhen Mint's HTTP/2 receive path observes a HEADERS frame without the END_HEADERS flag, the unparsed header-block fragment is parked in conn.headers_being_processed, and every subsequent CONTINUATION frame on that stream is appended to the accumulator. Nothing in the receive path caps the accumulator: there is no per-stream size limit, no CONTINUATION frame-count limit, and max_header_list_size is only enforced on outgoing requests, never on inbound header blocks (its default is :infinity).\n\nA malicious or compromised HTTP/2 server can stream an endless sequence of CONTINUATION frames (each up to the peer-advertised SETTINGS_MAX_FRAME_SIZE) and drive the client's iolist to arbitrary size, causing memory exhaustion and BEAM process death. A single connection to an attacker-controlled HTTP/2 endpoint is sufficient.\n\nThis issue affects mint: from 0.1.0 before 1.9.0."
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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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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "NETWORK",
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"baseScore": 8.2,
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"baseSeverity": "HIGH",
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"privilegesRequired": "NONE",
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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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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE"
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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-770",
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"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
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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": "2026-06-02T19:14:33.100Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-2p26-p43x-fhp8"
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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-2026-49754.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-2026-49754"
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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/b662d127d3028b5426c88d4c9cc7fe430491a10b"
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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": "HTTP/2 CONTINUATION flood in Mint client via unbounded header-block accumulation",
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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>Restrict Mint to HTTP/1 on connections to untrusted servers by passing <tt>protocols: [:http1]</tt> to <tt>'Elixir.Mint.HTTP':connect/4</tt>. This avoids the vulnerable HTTP/2 receive path entirely, at the cost of losing HTTP/2 for those connections.</p>"
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}
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],
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"value": "Restrict Mint to HTTP/1 on connections to untrusted servers by passing protocols: [:http1] to Mint.HTTP.connect/4. This avoids the vulnerable HTTP/2 receive path entirely, at the cost of losing HTTP/2 for those connections."
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}
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],
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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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-2p26-p43x-fhp8",
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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": "2026-06-02T18:08:02.308938Z",
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"id": "CVE-2026-49754",
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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": "yes"
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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": "2026-06-02T18:08:05.621Z"
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}
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}
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]
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}
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} |