What’s Vulnerable › Vulnerabilities
CVE-2026-107389: music-metadata: EBML parser trusts element lengths, allowing memory exhaustion or process abort
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-10-08 · updated 2026-10-21
- Weakness: CWE-789
Description
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.
Affected products
- Borewit music-metadata: before 11.16.0 — fixed in 11.16.0
How to fix
Upgrade to a fixed version: Borewit music-metadata 11.16.0. Check the vendor advisory for mitigations.
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
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