. Attackers can craft a malicious UR","datePublished":"2026-09-04T11:29:47.513000+00:00","dateModified":"2026-09-04T18:12:47.538000+00:00","inLanguage":"en","author":{"@type":"Organization","name":"Vexday"},"publisher":{"@type":"Organization","name":"Vexday","url":"https://vexday.io"},"mainEntityOfPage":"https://vexday.io/en/cve/CVE-2026-85577","keywords":"CVE-2026-85577, CWE-79","breadcrumb":{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://vexday.io/en"},{"@type":"ListItem","position":2,"name":"CVE-2026-85577"}]}}← back

CVE-2026-85577mediumCWE-79

AVideo userLogin.php Reflected XSS via error parameter

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%

exploitation probability

0.3%top 82% of all CVEs

observed exploitation

nono source reports it

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Affected products

WWBN · AVideo

References

https://github.com/WWBN/AVideo/security/advisories/GHSA-v654-6qw8-pc33https://www.vulncheck.com/advisories/avideo-userlogin-php-reflected-xss-via-error-parameter