CVE-2026-124031 GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124031?
CVE-2026-124031 is a medium-severity vulnerability in gpac, published on 6 Nov 2026.
Official description
GPAC through 26.07.0 contains a type confusion vulnerability in drawable_get_aspect_2d_mpeg4() and TraverseShape() that casts a Shape's appearance node to M_Appearance without checking its node tag. Attackers can supply a crafted XMT file placing another node type, such as Conditional, in the appearance field to trigger an invalid memory read and crash MP4Box.
Weakness: CWE-843
Which versions are affected by CVE-2026-124031?
How do I fix CVE-2026-124031?
No fix has been published for CVE-2026-124031 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124031 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124031 exists.
Sources
Also known as GHSA-f589-88mc-5jx5, UBUNTU-CVE-2026-124031.