Medium severity · published Sep 13, 2026
CVE-2026-90578
GPAC MP4Box list.c gf_list_count use after free
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GP
GPAC · Gpac
f1219cde · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90578
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90578
github.com
https://github.com/gpac/gpac/
github.com
https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
github.com
https://github.com/gpac/gpac/issues/3817
github.com
https://github.com/gpac/gpac/releases/tag/abi-16.23
github.com
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln-GPAC-MP4Box-SEGV-in-gf_list_count-(Use-After-Free).md
vuldb.com
https://vuldb.com/cve/CVE-2026-90578
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