CVE-2026-107389 music-metadata: EBML parser trusts element lengths, allowing memory exhaustion or process abort
Attackers can cause memory exhaustion or process aborts in music-metadata by providing crafted media files with invalid element lengths.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107389?
CVE-2026-107389 is a medium-severity denial of service vulnerability in Borewit music-metadata, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-789
Which versions are affected by CVE-2026-107389?
2 open source packages ship an affected version, including music-metadata. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
music-metadata npm | All versions | 11.16.0 |
music-metadata npm | All versions | 11.16.0 |
Products include Borewit Music-Metadata.
How do I fix CVE-2026-107389?
Upgrade music-metadata to 11.16.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-107389 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-107389 exists.
Other vulnerabilities in Borewit music-metadata
- CVE-2026-32256 music-metadata has an infinite loop vulnerability in ASF parser
- CVE-2026-107387 music-metadata: Uncontrolled memory allocation in APEv2 parser
- CVE-2026-107388 music-metadata: ID3v2 tag size not validated before allocation, causing memory exhaustion DoS
- CVE-2026-107390 music-metadata: MP4 parser allows memory exhaustion via oversized extended atom length
- CVE-2026-107391 music-metadata: MP4 stsd sample-entry size==0 causes a synchronous infinite loop (DoS) — unreleased regression on master
Sources
Also known as GHSA-5gfj-9q3v-qfp3, MINI-7vpv-8jmw-57wg.