CVE-2026-2889 CCExtractor mp4.c processmp4 use after free
A local attacker can trigger a use-after-free in CCExtractor's MP4 processing, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2889?
CVE-2026-2889 is a medium-severity use after free vulnerability in CCExtractor, published on 21 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was detected in CCExtractor up to 0.96.5. Affected is the function processmp4 in the library src/lib_ccx/mp4.c. Performing a manipulation results in use after free. The attack is only possible with local access. The exploit is now public and may be used. Upgrading to version 0.96.6 is able to address this issue. The patch is named fd7271bae238ccb3ae8a71304ea64f0886324925. You should upgrade the affected component.
Which versions are affected by CVE-2026-2889?
How do I fix CVE-2026-2889?
No fix has been published for CVE-2026-2889 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-2889 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2889 exists.
Sources
Also known as DEBIAN-CVE-2026-2889, GHSA-pc25-pwr8-gpp2, UBUNTU-CVE-2026-2889.