Medium severity5.5NVD Advisory· Published Nov 6, 2026· Updated Nov 6, 2026
CVE-2026-124031
CVE-2026-124031
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.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/gpac/gpac/blob/v26.07.0/src/compositor/drawable.cnvd
- github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39nvd
- github.com/gpac/gpac/issues/4030nvd
- github.com/sigdevel/pocs/blob/main/res/gpac/MP4Box/222/222_gf_node_get_tag_compositor_texturing_c_370.xmtnvd
- www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-drawable-get-aspect-2d-mpeg4nvd
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