CVE-2026-124031 | BDVDB-2026-401331 Detail
gpacgpac
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: local.
Weaknesses#
- CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')
References#
- https://github.com/gpac/gpac/issues/4030
- https://github.com/gpac/gpac
- https://github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39
- https://github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/222/222_gf_node_get_tag_compositor_texturing_c_370.xmt
- https://github.com/gpac/gpac/blob/v26.07.0/src/compositor/drawable.c#L564-L565
- https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-drawable-get-aspect-2d-mpeg4
Exploit#
History#
- Version 1Record published in the CVE List.