CVE-2026-107388: music-metadata — Exploit & Fix

Description

music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the ID3v2 parser trusts the syncsafe tag-size field and allocates the complete tag body before checking whether the input contains the declared bytes. A truncated file containing only an ID3v2 header can request an allocation approaching 268 MiB; the allocation succeeds, the subsequent read reaches end of stream, the EndOfStreamError is caught internally, and the caller receives a normal metadata object. This issue is fixed in version 11.16.0.

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CVSS v3.1 Score

6.2

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0014

Probability of exploitation

0.03%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-789 CWE-789

Affected Products

Vendor	Product	Versions
borewit	music-metadata	< 11.16.0

References

Advisories & Patches

https://github.com/Borewit/music-metadata/commit/b033db675b913a9dba1d29135ec3c10eae7095a7 https://github.com/Borewit/music-metadata/pull/2743 https://github.com/Borewit/music-metadata/releases/tag/v11.16.0 https://github.com/Borewit/music-metadata/security/advisories/GHSA-jjpr-9cvf-cq55 https://github.com/Borewit/music-metadata/security/advisories/GHSA-jjpr-9cvf-cq55

Exploits

https://github.com/Borewit/music-metadata/commit/b033db675b913a9dba1d29135ec3c10eae7095a7 https://github.com/Borewit/music-metadata/security/advisories/GHSA-jjpr-9cvf-cq55 https://github.com/Borewit/music-metadata/security/advisories/GHSA-jjpr-9cvf-cq55

Frequently Asked Questions

What is CVE-2026-107388? +

music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the ID3v2 parser trusts the syncsafe tag-size field and allocates the complete tag body before checking whether the input contains the declared bytes. A truncated file containing only an ID3v2 header can request an allocation approaching 268 MiB; the allocation succeeds, the subsequent read reaches end of stream, the EndOfStreamError is caught internally, and the caller receives a normal metadata object. This issue is fixed in version 11.16.0. It has a CVSS v3.1 base score of 6.2 (MEDIUM).

How severe is CVE-2026-107388? +

CVE-2026-107388 has a CVSS v3.1 score of 6.2 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0014, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-107388? +

CVE-2026-107388 affects products from borewit, specifically: music-metadata. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-107388? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-107388