Vulnerability · Published Mar 18, 2026 · Assigned by GitHub_M

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

High 7.5

In plain English

A high-severity infinite loop in music-metadata from Borewit. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 63.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	music-metadata	11.12.3	GHSA-v6c2-xwv6-8xf7

Affected products (as reported)

Vendor	Product	Versions
Borewit	music-metadata	< 11.12.3

Weakness: CWE-835 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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