CVE-2026-107389
music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the Matroska and WebM EBML parser decodes an attacker-controlled VINT element length and uses it for string-token or Uint8Array allocation before confirming that the leaf fits within its parent or available input. Crafted WebM, MKV, or MKA inputs can cause disproportionate allocations, out-of-memory denial of service, or, for a demonstrated parseFile path on Node.js 26.7.0, an uncatchable V8 fatal abort. The exact failure mode depends on the tokenizer, parser API, and runtime, but the affected leaf-length validation flaw is shared and has availability impact only. This issue is fixed in version 11.16.0.
CVSS
- Version: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Base score: 6.2
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 0.12%
- Percentile among all scored CVEs: 2
- Score date: 10/14/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1068Exploitation for Privilege Escalationprivilege escalation45 % - Primary impact
T1499.004Application or System Exploitationimpact85 % - Secondary impact
T1083File and Directory Discoverydiscovery30 %
AV:L/PR:N/UI:N indica acceso local sin privilegios ni interacción, pero CWE-789 (asignación descontrolada) y el mecanismo de consumo de memoria sin validación previa sugieren explotación de lógica local. El impacto es DoS por agotamiento de memoria (T1499.004) en parseo de archivos MKV/WebM; la enum
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.
CWEs
- CWE-789
References
- https://github.com/Borewit/music-metadata/commit/163f013364ac9fc8dd0c3987433cd065a615af58
- https://github.com/Borewit/music-metadata/commit/2d14dc1f7391a94235948a0b823155538f69b3df
- https://github.com/Borewit/music-metadata/pull/2735
- https://github.com/Borewit/music-metadata/releases/tag/v11.16.0
- https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3
- https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3
Raw JSON (NVD)
Show
{
"id": "CVE-2026-107389",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-107389",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-09T18:32:35.247883Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.2,
"attackVector": "LOCAL",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 2.5
}
]
},
"affected": [
{
"source": "security-advisories@github.com",
"affectedData": [
{
"vendor": "Borewit",
"product": "music-metadata",
"versions": [
{
"status": "affected",
"version": "< 11.16.0"
}
]
}
]
}
],
"published": "2026-10-08T20:17:33.190",
"references": [
{
"url": "https://github.com/Borewit/music-metadata/commit/163f013364ac9fc8dd0c3987433cd065a615af58",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/Borewit/music-metadata/commit/2d14dc1f7391a94235948a0b823155538f69b3df",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/Borewit/music-metadata/pull/2735",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/Borewit/music-metadata/releases/tag/v11.16.0",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Undergoing Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "security-advisories@github.com",
"description": [
{
"lang": "en",
"value": "CWE-789"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the Matroska and WebM EBML parser decodes an attacker-controlled VINT element length and uses it for string-token or Uint8Array allocation before confirming that the leaf fits within its parent or available input. Crafted WebM, MKV, or MKA inputs can cause disproportionate allocations, out-of-memory denial of service, or, for a demonstrated parseFile path on Node.js 26.7.0, an uncatchable V8 fatal abort. The exact failure mode depends on the tokenizer, parser API, and runtime, but the affected leaf-length validation flaw is shared and has availability impact only. This issue is fixed in version 11.16.0."
}
],
"lastModified": "2026-10-09T19:16:41.583",
"sourceIdentifier": "security-advisories@github.com"
}