CVE-2026-124031

medium

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.

References

https://www.vulncheck.com/advisories/gpac-through-26.07.0-type-confusion-via-drawable-get-aspect-2d-mpeg4

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/issues/4030

https://github.com/gpac/gpac/commit/43a8329a90ae2907716b593cc3746458516c7c39

https://github.com/gpac/gpac/blob/v26.07.0/src/compositor/drawable.c#L564-L565

https://github.com/gpac/gpac

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-118439

Details

Source: Mitre, NVD

Published: 2026-11-06

Updated: 2026-11-09

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 6.8

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00121