XSS in Wwbn Avideo
CVE-2026-100630
AVideo before 29.1.0 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 · last modified .
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
EPSS: 0.003 (20.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-v7vx-v9q9-qhw3) (vendor-advisory)
- VulnCheck Advisory: AVideo Stored XSS via HTML Entity Bypass in trailer1 Field (third-party-advisory)
- github.com/WWBN/AVideo/commit/40b3267760924389c626a549bb1c6fd013b3b29c (patch)
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.