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CVE-2026-90683

GPAC MP4Box base_scenegraph.c gf_node_unregister assertion

LOW
3.3
CVSS Score
Published: September 14, 2026 at 04:45 AM UTC
Updated: September 15, 2026 at 06:19 PM UTC
1 product affected across 1 vendorGpac

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Severity
LOW3.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gpac· Gpac
95%
All versionsf1219cde
Vendor states this is fixed in abi-16.23 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/403216
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403216/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-90683
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/913780
Issue Tracking
Source: cverecord
https://github.com/gpac/gpac/issues/3823
Exploit
Source: cverecord
https://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).md
Patch
Source: cverecord
https://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
Patch
Source: cverecord
https://github.com/gpac/gpac/releases/tag/abi-16.23

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.3LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-617

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