CVE-2026-121627
MEDIUM
NVD
CVSS Score
6.1
Severity
MEDIUM
Published
Nov 03, 2026
Vendor
unknown
Description
buku 5.0 through 5.1.1 contains a stored cross-site scripting vulnerability in the bukuserver bookmark list that allows attackers to execute script via an unescaped bookmark URL in BookmarkModelView._list_entry(). Attackers can submit a URL containing a double quote and event handler through the unauthenticated /api/bookmarks endpoint to issue same-origin API requests with viewers' credentials.