CVE-2026-90611 GPAC MP4Box loader_xmt.c xmt_parse_element assertion
A local attacker can trigger a reachable assertion in GPAC MP4Box, causing a denial of service via a crafted file.
- 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-2026-90611?
CVE-2026-90611 is a medium-severity denial of service vulnerability in GPAC, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was determined in GPAC up to f1219cde. This impacts the function xmt_parse_element of the file scene_manager/loader_xmt.c of the component MP4Box. Executing a manipulation can lead to reachable assertion. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.23 will fix this issue. This patch is called afca1f1181668d85941d51ed1adf647807d5d975. It is recommended to upgrade the affected component.
Weakness: CWE-617
Which versions are affected by CVE-2026-90611?
How do I fix CVE-2026-90611?
No fix has been published for CVE-2026-90611 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-90611 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90611 exists.
Sources
Also known as GHSA-h747-3q39-r5rp, UBUNTU-CVE-2026-90611.