Cross-site scripting in AVideo - CVE-2026-33500
Published: April 8, 2026 / Updated: April 15, 2026
Vulnerability identifier: #VU125461
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-33500
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: World Wide Broadcast Network
Affected software:
AVideo
AVideo
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary script in a victim's browser.
The vulnerability exists due to cross-site scripting in comment markdown link processing when rendering markdown links containing a javascript: URI. A remote user can post a specially crafted comment containing a markdown link to execute arbitrary script in a victim's browser.
User interaction is required because the victim must click the rendered link.
How to mitigate CVE-2026-33500
Install security update from vendor's website.