CVE-2026-90578: GPAC MP4Box list.c gf_list_count use after free

Severity: medium (CVSS 5.3 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: 2026-09-13 · updated 2026-09-15
Weakness: CWE-119

Description

A flaw has been found in GPAC up to f1219cde. Affected by this issue is the function gf_list_count of the file utils/list.c of the component MP4Box. Executing a manipulation can lead to use after free. The attack is restricted to local execution. The exploit has been published and may be used. Upgrading to version abi-16.23 can resolve this issue. This patch is called 49dee5cad329cfed310c1682703df7daa47df31a. It is suggested to upgrade the affected component.

Affected products

GPAC: f1219cde

References

https://github.com/gpac/gpac/
https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
https://github.com/gpac/gpac/issues/3817
https://github.com/gpac/gpac/releases/tag/abi-16.23
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-SEGV-in-gf_list_count-(Use-After-Free).md
https://vuldb.com/cve/CVE-2026-90578
https://vuldb.com/submit/913217
https://vuldb.com/vuln/403163
https://vuldb.com/vuln/403163/cti
https://github.com/gpac/gpac/issues/3817

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