Low 3.3Published Sep 14, 2026

CVE-2026-90683GPAC MP4Box base_scenegraph.c gf_node_unregister assertion

Updated under an hour ago (Oct 26, 2026, 11:25 PM ET)

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It affects n/a GPAC. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 3.3 LOW (v3.1, CNA)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
Weakness (CWE): CWE-617
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n/a GPAC gpac:gpac	f1219cde; abi-16.23 not affected	CNA record

References

References

https://vuldb.com/vuln/403216	vdb-entry, technical-description
https://vuldb.com/vuln/403216/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-90683	third-party-advisory
https://vuldb.com/submit/913780	third-party-advisory
https://github.com/gpac/gpac/issues/3823	issue-tracking
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).md	exploit
https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a	patch
https://github.com/gpac/gpac/releases/tag/abi-16.23	patch
https://github.com/gpac/gpac/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.