VULN/vuln-cve
1
0 Fork 0
Code Pull Requests Actions 1 Activity
Files
c1444140e59c61ba154436ea0cd6284d8a97c3f0
vuln-cve/data/2026/48xxx/CVE-2026-48862.json
T

281 lines
13 KiB
JSON
Raw Blame History

{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-48862",
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"state": "PUBLISHED",
"assignerShortName": "EEF",
"dateReserved": "2026-05-25T20:44:10.697Z",
"datePublished": "2026-06-02T14:15:10.591Z",
"dateUpdated": "2026-06-02T19:14:09.683Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"'Elixir.Mint.HTTP2'"
],
"packageName": "mint",
"packageURL": "pkg:hex/mint",
"product": "mint",
"programFiles": [
"lib/mint/http2.ex"
],
"programRoutines": [
{
"name": "'Elixir.Mint.HTTP2':handle_push_promise/3"
},
{
"name": "'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5"
}
],
"repo": "https://github.com/elixir-mint/mint",
"vendor": "elixir-mint",
"versions": [
{
"lessThan": "1.9.0",
"status": "affected",
"version": "0.2.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"'Elixir.Mint.HTTP2'"
],
"packageName": "elixir-mint/mint",
"packageURL": "pkg:github/elixir-mint/mint",
"product": "mint",
"programFiles": [
"lib/mint/http2.ex"
],
"programRoutines": [
{
"name": "'Elixir.Mint.HTTP2':handle_push_promise/3"
},
{
"name": "'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5"
}
],
"repo": "https://github.com/elixir-mint/mint.git",
"vendor": "elixir-mint",
"versions": [
{
"lessThan": "70b97b6a5209fb288b0e04d8e657dda26c59de67",
"status": "affected",
"version": "65c6394d05a1b8aa4a7461708c3aa173e8d7a5cf",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:*",
"versionEndExcluding": "1.9.0",
"versionStartIncluding": "0.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Eric Meadows-Jönsson"
},
{
"lang": "en",
"type": "analyst",
"value": "Jonatan Männchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"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 via PUSH_PROMISE flooding.<p>In <tt>lib/mint/http2.ex</tt>, <tt>'Elixir.Mint.HTTP2':decode_push_promise_headers_and_add_response/5</tt> inserts a <tt>:reserved_remote</tt> entry into <tt>conn.streams</tt> for every promised stream ID. The neighbouring <tt>'Elixir.Mint.HTTP2':assert_valid_promised_stream_id/2</tt> only verifies that the promised ID is even and not already present; <tt>client_settings.max_concurrent_streams</tt> is not consulted at promise time. The concurrency cap is only checked when the response <tt>HEADERS</tt> for the promised stream arrive, so a server that emits <tt>PUSH_PROMISE</tt> frames and withholds the matching <tt>HEADERS</tt> never trips that check.</p><p>HTTP/2 server push is accepted by default (<tt>client_settings.enable_push</tt> defaults to <tt>true</tt>). A single long-lived HTTP/2 connection to a hostile server lets that server pin one <tt>conn.streams</tt> entry per <tt>PUSH_PROMISE</tt> frame it sends, with no upper bound, until the client process runs out of memory.</p><p>This issue affects mint: from 0.2.0 before 1.9.0.</p>"
}
],
"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 via PUSH_PROMISE flooding.\n\nIn lib/mint/http2.ex, Mint.HTTP2.decode_push_promise_headers_and_add_response/5 inserts a :reserved_remote entry into conn.streams for every promised stream ID. The neighbouring Mint.HTTP2.assert_valid_promised_stream_id/2 only verifies that the promised ID is even and not already present; client_settings.max_concurrent_streams is not consulted at promise time. The concurrency cap is only checked when the response HEADERS for the promised stream arrive, so a server that emits PUSH_PROMISE frames and withholds the matching HEADERS never trips that check.\n\nHTTP/2 server push is accepted by default (client_settings.enable_push defaults to true). A single long-lived HTTP/2 connection to a hostile server lets that server pin one conn.streams entry per PUSH_PROMISE frame it sends, with no upper bound, until the client process runs out of memory.\n\nThis issue affects mint: from 0.2.0 before 1.9.0."
}
],
"impacts": [
{
"capecId": "CAPEC-130",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-130 Excessive Allocation"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF",
"dateUpdated": "2026-06-02T19:14:09.683Z"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-g586-ccqf-7x4r"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48862.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48862"
},
{
"tags": [
"patch"
],
"url": "https://github.com/elixir-mint/mint/commit/70b97b6a5209fb288b0e04d8e657dda26c59de67"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Unbounded conn.streams growth in Mint HTTP/2 client via unenforced PUSH_PROMISE concurrency",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>Disable HTTP/2 server push on connections to untrusted servers by passing <tt>client_settings: [enable_push: false]</tt> to <tt>'Elixir.Mint.HTTP':connect/4</tt>. This makes Mint reject any inbound <tt>PUSH_PROMISE</tt> frame with a <tt>PROTOCOL_ERROR</tt> before the vulnerable code path is reached.</p>"
}
],
"value": "Disable HTTP/2 server push on connections to untrusted servers by passing client_settings: [enable_push: false] to Mint.HTTP.connect/4. This makes Mint reject any inbound PUSH_PROMISE frame with a PROTOCOL_ERROR before the vulnerable code path is reached."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/elixir-mint/mint/security/advisories/GHSA-g586-ccqf-7x4r",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-06-02T18:11:00.524487Z",
"id": "CVE-2026-48862",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"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": "2026-06-02T18:11:05.599Z"
}
}
]
}
}
View Git Blame Copy Permalink