CVE-2026-90611: GPAC MP4Box loader_xmt.c xmt_parse_element assertion

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-14 · updated 2026-09-15
Weakness: CWE-617

Description

A vulnerability was determined in GPAC up to f1219cde. This impacts the function xmt_parse_element of the file scene_manager/loader_xmt.c of the component MP4Box. Executing a manipulation can lead to reachable assertion. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. Upgrading to version abi-16.23 will fix this issue. This patch is called afca1f1181668d85941d51ed1adf647807d5d975. It is recommended to upgrade the affected component.

Affected products

GPAC: f1219cde

References

https://github.com/gpac/gpac/
https://github.com/gpac/gpac/commit/afca1f1181668d85941d51ed1adf647807d5d975
https://github.com/gpac/gpac/issues/3820
https://github.com/gpac/gpac/releases/tag/abi-16.23
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-Assertion-Failure-in-xmt_parse_element.md
https://vuldb.com/cve/CVE-2026-90611
https://vuldb.com/submit/913517
https://vuldb.com/vuln/403193
https://vuldb.com/vuln/403193/cti
https://github.com/gpac/gpac/issues/3820

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