Answer in brief
CVE-2026-108538 records a Medium severity (CVSS 5.3) vulnerability in GPAC MP4Box os_thread.c gf_mx_v use after free. The current sources do not mark it as known exploited. The current feed maps n/a/GPAC (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps n/a/GPAC (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| n/a/GPACgeneric | 26.07 | Not reported |
Published upstream
Oct 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 11, 2026
A security vulnerability has been detected in GPAC up to 26.07.0. The impacted element is the function gf_mx_v of the file utils/os_thread.c of the component MP4Box. Such manipulation leads to use after free. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Quoted source text, attributed separately from HOL analysis.