CVE-2026-91086 GPAC MPEG Video Reframer reframe_mpgvid.c mpgviddmx_process heap-based overflow
A heap-based buffer overflow in GPAC's MPEG Video Reframer allows remote attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-91086?
CVE-2026-91086 is a medium-severity memory corruption vulnerability in GPAC, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Which versions are affected by CVE-2026-91086?
How do I fix CVE-2026-91086?
No fix has been published for CVE-2026-91086 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-91086 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91086 exists.
Sources
Also known as GHSA-39g2-989c-6gxv, UBUNTU-CVE-2026-91086.