XSS in Wwbn Avideo
CVE-2026-100630
AVideo contains a stored cross-site scripting vulnerability in the video trailer1 field rendered unsanitized within an inline onclick JavaScript string. Attackers with video upload permission can store HTML entity-encoded payloads that bypass isValidURL() validation and are decoded by the browser to break out of the JavaScript string, executing arbitrary code in any visitor's session including administrators.
Vulnerability class: XSS (Cross-Site Scripting)
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-v7vx-v9q9-qhw3 (vendor-advisory)
- www.vulncheck.com/advisories/avideo-stored-xss-via-html-entity-bypass-in-traile… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100630?
- CVE-2026-100630 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-26.
- How severe is CVE-2026-100630?
- Medium severity. CVSS v3 base score is 5.4 out of 10.