CVE-2026-90683

GPAC MP4Box base_scenegraph.c gf_node_unregister assertion

State: Published
Severity: 4.8 Medium
Published: Sep 14, 2026
Updated: Sep 15, 2026
Reserved: Sep 13, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	4.8 Medium	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	3.3 Low	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
3.0	3.3 Low	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C	VulDB
2.0	1.7 Low	AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-617 Reachable Assertion

Affected Products

Product	Versions
GPACn/a	f1219cdeAffected abi-16.23Not affected

References

VDB-403216 | GPAC MP4Box base_scenegraph.c gf_node_unregister assertionvdb-entrytechnical-description
VDB-403216 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-90683 | CVE Analysis and Reportthird-party-advisory
Submit #913780 | GPAC up to commit f1219cde (2026-07-25) Denial of Servicethird-party-advisory
https://github.com/gpac/gpac/issues/3823issue-tracking
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).mdexploit
https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31apatch
https://github.com/gpac/gpac/releases/tag/abi-16.23patch
https://github.com/gpac/gpac/product

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