CVE-2026-90545

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-12. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate video access permissions in the commentAddNew.json.php endpoint, allowing authenticated users to post comments on password-protected and group-restricted videos. Attackers can submit POST requests with a valid session to add comments to videos they cannot watch, bypassing password and group access controls.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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 computed
Severity43% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

September 12, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 12, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

WWBN AVideo Missing Authorization via commentAddNew.json.php | Advisories | VulnCheck

https://www.vulncheck.com/advisories/wwbn-avideo-missing-authorization-via-commentaddnew-json-php
github Patch Available🟡 PoC Available

Missing authorization: `objects/commentAddNew.json.php` posts comments on password- and group-restricted videos without `canWatchVideo` · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-v3p2-4x76-7p8v

Vendor Advisories for CVE-2026-90545(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 17× in last 7d / 40× 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.

  1. 2026-09-24 14:44 UTCEG score recompute
  2. 2026-09-24 14:44 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 15:30 UTCGHSA enrichment
  6. 2026-09-22 16:16 UTCEG score recompute
  7. 2026-09-22 16:16 UTCGHSA enrichment
  8. 2026-09-22 16:01 UTCEPSS rescore
  9. 2026-09-21 21:09 UTCEPSS rescore
  10. 2026-09-21 17:02 UTCEG score recompute
  11. 2026-09-21 17:02 UTCGHSA enrichment
  12. 2026-09-20 20:16 UTCEPSS rescore
  13. 2026-09-20 17:18 UTCGHSA enrichment
  14. 2026-09-19 18:04 UTCEG score recompute
  15. 2026-09-19 18:04 UTCGHSA enrichment
  16. 2026-09-18 19:28 UTCEPSS rescore
  17. 2026-09-18 18:50 UTCGHSA enrichment
  18. 2026-09-17 19:36 UTCEG score recompute
  19. 2026-09-17 19:36 UTCGHSA enrichment
  20. 2026-09-17 19:32 UTCEPSS rescore
  21. 2026-09-16 20:02 UTCEG score recompute
  22. 2026-09-16 20:02 UTCGHSA enrichment
  23. 2026-09-16 14:09 UTCEPSS rescore
  24. 2026-09-16 05:15 UTCEPSS rescore
  25. 2026-09-15 20:48 UTCEG score recompute
Show 15 more
  1. 2026-09-15 20:48 UTCGHSA enrichment
  2. 2026-09-15 03:12 UTCEPSS rescore
  3. 2026-09-14 21:18 UTCGHSA enrichment
  4. 2026-09-14 17:28 UTCEG score recompute
  5. 2026-09-14 17:28 UTCGHSA enrichment
  6. 2026-09-14 16:20 UTCEG score recompute
  7. 2026-09-14 16:20 UTCGHSA enrichment
  8. 2026-09-14 11:53 UTCEG score recompute
  9. 2026-09-14 11:53 UTCGHSA enrichment
  10. 2026-09-13 16:48 UTCEPSS rescore
  11. 2026-09-13 12:39 UTCEG score recompute
  12. 2026-09-13 12:39 UTCGHSA enrichment
  13. 2026-09-12 13:25 UTCEG score recompute
  14. 2026-09-12 12:19 UTCEG score recompute
  15. 2026-09-12 12:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90545?
CVE-2026-90545 is a medium vulnerability published on September 12, 2026. WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate video access permissions in the commentAddNew.json.php endpoint, allowing authenticated users to post comments on password-protected and group-restricted videos. Attackers can submit POST requests with a valid…
When was CVE-2026-90545 disclosed?
CVE-2026-90545 was first published in the National Vulnerability Database on September 12, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-90545 actively exploited?
CVE-2026-90545 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 80.3% of all scored CVEs.
What is the CVSS score of CVE-2026-90545?
CVE-2026-90545 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-90545?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90545, 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

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