CVE-2026-90540

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 watch permissions in the playListAddVideo.json.php endpoint when adding videos to playlists. Authenticated attackers can add password-protected videos they cannot watch to playlists they own by submitting the video ID and playlist ID parameters.

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
16%
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 playListAddVideo.json.php | Advisories | VulnCheck

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

Missing authorization: `objects/playListAddVideo.json.php` adds a password-protected VOD to the caller's playlist without `canWatchVideo` · Advisory · WWBN/AVideo · GitHub

https://github.com/WWBN/AVideo/security/advisories/GHSA-xhg9-rc5h-rp65

Vendor Advisories for CVE-2026-90540(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 18× in last 7d / 39× 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 16:44 UTCEG score recompute
  2. 2026-09-24 16:44 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 14:34 UTCEG score recompute
  6. 2026-09-23 14:34 UTCGHSA enrichment
  7. 2026-09-22 16:01 UTCEPSS rescore
  8. 2026-09-22 12:25 UTCEG score recompute
  9. 2026-09-22 12:25 UTCGHSA enrichment
  10. 2026-09-21 21:09 UTCEPSS rescore
  11. 2026-09-21 10:15 UTCEG score recompute
  12. 2026-09-21 10:15 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-20 08:06 UTCEG score recompute
  15. 2026-09-20 08:06 UTCGHSA enrichment
  16. 2026-09-19 05:56 UTCEG score recompute
  17. 2026-09-19 05:56 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-18 03:47 UTCEG score recompute
  20. 2026-09-18 03:47 UTCGHSA enrichment
  21. 2026-09-17 19:32 UTCEPSS rescore
  22. 2026-09-17 01:37 UTCEG score recompute
  23. 2026-09-17 01:37 UTCGHSA enrichment
  24. 2026-09-16 14:09 UTCEPSS rescore
  25. 2026-09-16 05:15 UTCEPSS rescore
Show 14 more
  1. 2026-09-15 23:28 UTCEG score recompute
  2. 2026-09-15 23:28 UTCGHSA enrichment
  3. 2026-09-15 03:12 UTCEPSS rescore
  4. 2026-09-14 21:18 UTCGHSA enrichment
  5. 2026-09-14 17:28 UTCEG score recompute
  6. 2026-09-14 17:28 UTCGHSA enrichment
  7. 2026-09-14 16:20 UTCEG score recompute
  8. 2026-09-14 16:20 UTCGHSA enrichment
  9. 2026-09-13 16:48 UTCEPSS rescore
  10. 2026-09-13 15:36 UTCEG score recompute
  11. 2026-09-13 15:36 UTCGHSA enrichment
  12. 2026-09-12 13:25 UTCEG score recompute
  13. 2026-09-12 12:19 UTCEG score recompute
  14. 2026-09-12 12:18 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-90540?
CVE-2026-90540 is a medium vulnerability published on September 12, 2026. WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate watch permissions in the playListAddVideo.json.php endpoint when adding videos to playlists. Authenticated attackers can add password-protected videos they cannot watch to playlists they own by submitting the…
When was CVE-2026-90540 disclosed?
CVE-2026-90540 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-2026-90540 actively exploited?
CVE-2026-90540 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 83.7% of all scored CVEs.
What is the CVSS score of CVE-2026-90540?
CVE-2026-90540 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-90540?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-90540, 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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