XSS in Wwbn Avideo
CVE-2026-89249
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the YPTWallet plugin where user-supplied CryptoWallet values are base64-encoded but not HTML-escaped before storage in wallet_log.information. Administrators viewing pending withdrawal requests in pendingRequests.php execute the stored markup in their session, allowing attackers to perform administrative actions via same-origin fetch requests.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-fvp5-q9jp-29mx (vendor-advisory)
- www.vulncheck.com/advisories/avideo-yptwallet-stored-xss-via-cryptowallet-confi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-89249?
- CVE-2026-89249 is a high-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-09-11.
- How severe is CVE-2026-89249?
- High severity. CVSS v3 base score is 8.7 out of 10.