Medium 6.3Published Oct 11, 2026

CVE-2026-108538GPAC MP4Box os_thread.c gf_mx_v use after free

Updated under an hour ago (2026-10-19 10:00 UTC)

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It affects n/a GPAC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
Weakness (CWE): CWE-416, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 11, 2026

Affected products

Affected products

n/a GPAC gpac:gpac	26.07	CNA record

References

https://vuldb.com/vuln/416193vdb-entry, technical-description
https://vuldb.com/vuln/416193/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-108538third-party-advisory
https://vuldb.com/submit/941979third-party-advisory
https://github.com/user-attachments/files/31270809/PoC.zipexploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.