CVE-2026-90686 GPAC MP4Box loader_bt.c gf_bt_report memory corruption

Medium 6.9 Published Updated

Remote attackers can trigger memory corruption in GPAC MP4Box via crafted files, potentially leading to code execution or crashes.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-90686?

CVE-2026-90686 is a medium-severity memory corruption vulnerability in GPAC, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability was found in GPAC up to f1219cde. This affects the function gf_bt_report of the file scene_manager/loader_bt.c of the component MP4Box. The manipulation results in memory corruption. The attack may be performed from remote. The exploit has been made public and could be used. Upgrading to version abi-16.23 is able to mitigate this issue. The patch is identified as afca1f1181668d85941d51ed1adf647807d5d975. It is suggested to upgrade the affected component.

Weakness: CWE-119

Which versions are affected by CVE-2026-90686?

How do I fix CVE-2026-90686?

No fix has been published for CVE-2026-90686 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-2026-90686 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90686 exists.

Sources

Also known as GHSA-qwm3-v6mj-w6g3, UBUNTU-CVE-2026-90686.

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