Medium severity · published Sep 4, 2026
CVE-2026-85577
AVideo userLogin.php Reflected XSS via error parameter
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AV
AVideo · WWBN
through c91b5975d · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-85577
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-85577
github.com
https://github.com/WWBN/AVideo/security/advisories/GHSA-v654-6qw8-pc33
www.vulncheck.com
https://www.vulncheck.com/advisories/avideo-userlogin-php-reflected-xss-via-error-parameter
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