Cross-site scripting in AVideo - CVE-2026-105086
Published: November 11, 2026 / Updated: November 13, 2026
Vulnerability identifier: #VU165935
CSH Severity: Medium
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-2026-105086
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute JavaScript in visitors' and administrators' browsers, access sensitive information, and perform administrative actions through a victim's session.
The vulnerability exists due to improper output neutralization in AVideo's video-title handling when successive safeString() calls decode entities after stripping tags and templates render stored titles unescaped. A remote user can upload a video with the title &&<lt;img src=x onerror=alert(1)&&>gt; to execute JavaScript when a victim views a page displaying the listed video.
Affected software
AVideo
How to mitigate CVE-2026-105086
Install security update from vendor's website.
AVideo - update to 29.3.0