XSS in Wwbn Avideo
CVE-2026-41063
WWBN AVideo is an open source video platform. In versions 29.0 and below, an incomplete XSS fix in AVideo's `ParsedownSafeWithLinks` class overrides `inlineMarkup` for raw HTML but does not override `inlineLink()` or `inlineUrlTag()`, allowing `javascript:` URLs in markdown link syntax to bypass sanitization. Commit cae8f0dadbdd962c89b91d0095c76edb8aadcacf contains an updated fix.
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 (22.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% 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
- Wwbn Avideo — versions <= 29.0
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-m7r8-6q9j-m2hc (Exploit, Mitigation, Vendor Advisory)
- github.com/WWBN/AVideo/security/advisories/GHSA-72h5-39r7-r26j (Exploit, Mitigation, Vendor Advisory)
- github.com/WWBN/AVideo/commit/3ae02fa240939dbefc5949d64f05790fd25d728d (Patch)
- github.com/WWBN/AVideo/commit/cae8f0dadbdd962c89b91d0095c76edb8aadcacf (Patch)
Frequently asked questions
- What is CVE-2026-41063?
- CVE-2026-41063 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-21.
- How severe is CVE-2026-41063?
- Medium severity. CVSS v3 base score is 5.4 out of 10.