CVE-2026-124031

GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4

6.8 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.12%Scored on 2026-11-07. The trend appears after a second daily score.

What each source reports

CVE List Score used 6.8

GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4

Record: CVE-2026-124031
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-06

EUVDEUVD-2026-118439 6.8

Record: EUVD-2026-118439
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-07

GitHub AdvisoriesGHSA-f589-88mc-5jx5 6.8

GPAC through 26.07.0 contains a type confusion vulnerability in drawable_get_aspect_2d_mpeg4()...

Record: GHSA-f589-88mc-5jx5
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-06

NVD 6.8

Record: CVE-2026-124031
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-843
Updated: 2026-11-06

OSV 6.8

GPAC through 26.07.0 Type Confusion via drawable_get_aspect_2d_mpeg4

Record: CVE-2026-124031
CVSS 4.0: 6.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-843
Updated: 2026-11-08

Affected products

gpac

History

History
Recorded	Changed	Sources
Nov 7, 2026	references	OSV
Nov 7, 2026	published	EUVD
Nov 6, 2026	published	EUVD, NVD
Nov 6, 2026	aliases, references	GitHub Advisories
Nov 6, 2026	cwes, products, references, severity, title	CVE List
Nov 6, 2026	first indexed	EUVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-124031 is a medium vulnerability (CVSS 6.8) in Gpac, published November 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.