CVE-2026-107389
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.
Does this matter?
Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.21% probability · 12th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-789
- Affected
- borewit/music-metadata
- Source
- security-advisories@github.com
EPSS moved from 0.1% on 9 October 2026 to 0.2% on 27 October 2026.
References
- https://github.com/Borewit/music-metadata/commit/163f013364ac9fc8dd0c3987433cd065a615af58Exploit, Patch
- https://github.com/Borewit/music-metadata/commit/2d14dc1f7391a94235948a0b823155538f69b3dfExploit, Patch
- https://github.com/Borewit/music-metadata/pull/2735Patch
- https://github.com/Borewit/music-metadata/releases/tag/v11.16.0Patch, Release Notes
- https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3Exploit, Patch, Vendor Advisory
- https://github.com/Borewit/music-metadata/security/advisories/GHSA-5gfj-9q3v-qfp3Exploit, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.