Auth bypass in Wwbn Avideo
CVE-2026-90540
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (18.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-xhg9-rc5h-rp65 (vendor-advisory)
- www.vulncheck.com/advisories/wwbn-avideo-missing-authorization-via-playlistaddv… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90540?
- CVE-2026-90540 is a medium-severity vulnerability in Wwbn Avideo, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-12.
- How severe is CVE-2026-90540?
- Medium severity. CVSS v3 base score is 4.3 out of 10.