GPAC through 26.07.0 contains a NULL pointer dereference vulnerability in the MPEG-4 Form spatial-constraint handlers in src/compositor/mpeg4_form.c that lets attackers crash the process via unchecked group lookups. Attackers can supply a crafted XMT scene whose Form constraints reference a non-existent group, crashing tools like MP4Box during chapter import for denial of service.
History

Fri, 13 Nov 2026 23:30:00 +0000

Type Values Removed Values Added
References

Fri, 13 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description GPAC through 26.07.0 contains a NULL pointer dereference vulnerability in the MPEG-4 Form spatial-constraint handlers in src/compositor/mpeg4_form.c that lets attackers crash the process via unchecked group lookups. Attackers can supply a crafted XMT scene whose Form constraints reference a non-existent group, crashing tools like MP4Box during chapter import for denial of service.
Title GPAC through 26.07.0 NULL Pointer Dereference via MPEG-4 Form Handlers
First Time appeared Gpac
Gpac gpac
Weaknesses CWE-476
CPEs cpe:2.3:a:gpac:gpac:*:*:*:*:*:*:*:*
Vendors & Products Gpac
Gpac gpac
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-13T09:33:47.579Z

Updated: 2026-11-13T23:05:06.286Z

Reserved: 2026-11-12T23:11:45.421Z

Link: CVE-2026-128239

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-13T10:18:11.657

Modified: 2026-11-13T23:17:18.230

Link: CVE-2026-128239

cve-icon Redhat

No data.