CVE-2026-90683

A vulnerability was detected in GPAC up to f1219cde. Affected is the function gf_node_unregister of the file scenegraph/base_scenegraph.c of the component MP4Box. Performing a manipulation results in reachable assertion. Attacking locally is a requirement. The exploit is now public and may be used. Upgrading to version abi-16.23 is able to address this issue. The patch is named 49dee5cad329cfed310c1682703df7daa47df31a. It is advisable to upgrade the affected component. This is not a duplicate of CVE-2021-46237 or CVE-2021-46234.

• CWE-617

• https://github.com/gpac/gpac/
• https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
• https://github.com/gpac/gpac/issues/3823
• https://github.com/gpac/gpac/releases/tag/abi-16.23
• https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).md
• https://vuldb.com/cve/CVE-2026-90683
• https://vuldb.com/submit/913780
• https://vuldb.com/vuln/403216
• https://vuldb.com/vuln/403216/cti
• https://github.com/gpac/gpac/issues/3823

Published

Sep 14, 2026

Last Modified

Sep 15, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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