CVE-2026-91091 GPAC Node Insertion base_scenegraph.c gf_node_list_insert_child memory corruption
Remote attackers can trigger memory corruption in GPAC via crafted content, potentially leading to code execution.
- 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-2026-91091?
CVE-2026-91091 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 vulnerability was identified in GPAC up to f1219cde. The impacted element is the function gf_node_list_insert_child of the file scenegraph/base_scenegraph.c of the component Node Insertion. Such manipulation leads to memory corruption. The attack can be launched remotely. The exploit is publicly available and might be used. Upgrading to version abi-16.23 is sufficient to resolve this issue. The name of the patch is 49dee5cad329cfed310c1682703df7daa47df31a. It is suggested to upgrade the affected component.
Weakness: CWE-119
Which versions are affected by CVE-2026-91091?
How do I fix CVE-2026-91091?
No fix has been published for CVE-2026-91091 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-2026-91091 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91091 exists.
Sources
Also known as GHSA-q5hg-62rj-mq63, UBUNTU-CVE-2026-91091.