CVE-2026-89256
HIGH
NVD
CVSS Score
8.7
Severity
HIGH
Published
Sep 11, 2026
Vendor
unknown
Description
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a stored cross-site scripting vulnerability in the Bookmark plugin where chapter names are not encoded before being concatenated into public watch-page HTML. A video owner can inject malicious scripts via the bookmark name parameter, and every visitor of that video executes the payload in the AVideo origin.