XSS in Wwbn Avideo
CVE-2026-33499
WWBN AVideo is an open source video platform. In versions up to and including 26.0, the `view/forbiddenPage.php` and `view/warningPage.php` templates reflect the `$_REQUEST['unlockPassword']` parameter directly into an HTML `<input>` tag's attributes without any output encoding or sanitization. An attacker can craft a URL that breaks out of the `value` attribute and injects arbitrary HTML attributes including JavaScript event handlers, achieving reflected XSS against any visitor who clicks the link. Commit f154167251c9cf183ce09cd018d07e9352310457 contains a patch.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (14.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Wwbn Avideo — versions <= 26.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-33499?
- CVE-2026-33499 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-23.
- How severe is CVE-2026-33499?
- Medium severity. CVSS v3 base score is 6.1 out of 10.