Vulnerability · Published Sep 15, 2026 · Assigned by VulDB

CVE-2026-91086GPAC MPEG Video Reframer reframe_mpgvid.c mpgviddmx_process heap-based overflow

Medium 6.3

In plain English

A medium-severity heap buffer overflow in GPAC. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.6%top 53.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A security vulnerability has been detected in GPAC up to f1219cde. Affected by this issue is the function mpgviddmx_process of the file filters/reframe_mpgvid.c of the component MPEG Video Reframer. Such manipulation leads to heap-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. Upgrading to version abi-16.23 can resolve this issue. The name of the patch is afca1f1181668d85941d51ed1adf647807d5d975. Upgrading the affected component is recommended.

Affected products (as reported)

Vendor	Product	Versions
n/a	GPAC	f1219cde

Weakness: CWE-122, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References

VDB-403647 | GPAC MPEG Video Reframer reframe_mpgvid.c mpgviddmx_process heap-based overflow vdb-entry, technical-description
VDB-403647 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
CVE-2026-91086 | CVE Analysis and Report third-party-advisory
Submit #919755 | GPAC master f1219cde (2026-07-25) Buffer Overflow third-party-advisory
https://github.com/gpac/gpac/issues/3806 issue-tracking
https://github.com/user-attachments/files/30399291/poc_10_add.zip exploit
https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975 patch
https://github.com/gpac/gpac/releases/tag/abi-16.23 patch
https://github.com/gpac/gpac/ product