XSS in Wwbn Avideo
CVE-2026-85577
AVideo through commit c91b5975d contains a reflected cross-site scripting vulnerability in userLogin.php that allows unauthenticated attackers to inject arbitrary JavaScript by closing the script tag with </script>. Attackers can craft a malicious URL with an error parameter containing script breakout sequences to execute arbitrary JavaScript in the victim's browser context on the login page.
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:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (19.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/WWBN/AVideo/security/advisories/GHSA-v654-6qw8-pc33 (vendor-advisory)
- www.vulncheck.com/advisories/avideo-userlogin-php-reflected-xss-via-error-param… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-85577?
- CVE-2026-85577 is a medium-severity vulnerability in Wwbn Avideo, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-09-04.
- How severe is CVE-2026-85577?
- Medium severity. CVSS v3 base score is 5.4 out of 10.