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.
CVE-2026-90683
LOWPre-NVD 3.33.3—Trending — 5 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-09-14. a secondary CVSS source baseline 3.3; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
3.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 3.3Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.3
- EG Score
- 3.3(high)
- EG Risk
- 31(Track)EG Risk 31/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity33% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 2%
- KEV
- Not listed
Published
September 14, 2026
Last Modified
September 15, 2026
References (10)
- cna@vuldbhttps://github.com/gpac/gpac/
- cna@vuldbhttps://github.com/gpac/gpac/commit/49dee5cad329cfed310c1682703df7daa47df31a
- cna@vuldbhttps://github.com/gpac/gpac/issues/3823
- cna@vuldbhttps://github.com/gpac/gpac/releases/tag/abi-16.23
- cna@vuldbhttps://github.com/r1ck9-2q/cve_summit/blob/main/Vuln%20GPAC%20MP4Box%20Assertion%20Failure%20assert(num_instances).md
- cna@vuldbhttps://vuldb.com/cve/CVE-2026-90683
- cna@vuldbhttps://vuldb.com/submit/913780
- cna@vuldbhttps://vuldb.com/vuln/403216
- cna@vuldbhttps://vuldb.com/vuln/403216/cti
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/gpac/gpac/issues/3823
Vendor Advisories for CVE-2026-90683(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 19× in last 7d / 19× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-18 11:36 UTCEG score recompute
- 2026-09-18 11:36 UTCGHSA enrichment
- 2026-09-17 19:32 UTCEPSS rescore
- 2026-09-16 14:09 UTCEPSS rescore
- 2026-09-16 05:15 UTCEPSS rescore
- 2026-09-15 18:35 UTCEG score recompute
- 2026-09-15 18:35 UTCGHSA enrichment
- 2026-09-15 18:31 UTCNVD updateCVSS v4 → 1.9
- 2026-09-15 17:28 UTCEG score recompute
- 2026-09-15 17:28 UTCGHSA enrichment
- 2026-09-15 17:28 UTCMITRE cvelistV5CVSS v4 → 4.8
- 2026-09-15 03:12 UTCEPSS rescore
- 2026-09-14 21:05 UTCEG score recompute
- 2026-09-14 21:05 UTCGHSA enrichment
- 2026-09-14 05:19 UTCEG score recompute
- 2026-09-14 05:19 UTCNVD updateCVSS v4 → 1.9
- 2026-09-14 04:55 UTCEG score recompute
- 2026-09-14 04:54 UTCMITRE cvelistV5first tracked
Frequently asked(5)
What is CVE-2026-90683?
CVE-2026-90683 is a low vulnerability published on September 14, 2026. A vulnerability was detected in GPAC up to f1219cde. Affected is the function gfnodeunregister 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.…
When was CVE-2026-90683 disclosed?
CVE-2026-90683 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90683 actively exploited?
CVE-2026-90683 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-90683?
CVE-2026-90683 has a CVSS v3 base score of 3.3 (NVD).
How do I remediate CVE-2026-90683?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90683, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-90683
Is Your Infrastructure Affected by CVE-2026-90683?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.