CVE-2026-90793 GPAC MP4Box base_scenegraph.c gf_node_get_name use after free
A remote attacker can exploit a use-after-free flaw in GPAC's MP4Box component to potentially execute arbitrary code or cause a 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-2026-90793?
CVE-2026-90793 is a medium-severity use after free vulnerability in GPAC, published on 14 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 vulnerability has been found in GPAC up to f1219cde. Impacted is the function gf_node_get_name of the file scenegraph/base_scenegraph.c of the component MP4Box. Such manipulation leads to use after free. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. Upgrading to version abi-16.23 is recommended to address this issue. The name of the patch is 9eb40df4448b88d6a6ce3454657c06f47eff0b24. Upgrading the affected component is advised.
Which versions are affected by CVE-2026-90793?
How do I fix CVE-2026-90793?
No fix has been published for CVE-2026-90793 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-2026-90793 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90793 exists.
Sources
Also known as GHSA-w89m-mxjv-rf5w, UBUNTU-CVE-2026-90793.