CVE-2026-104466
MEDIUM
NVD
CVSS Score
5.4
Severity
MEDIUM
Published
Oct 02, 2026
Vendor
unknown
Description
YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in formatters/wakka.php that allows users who can edit pages or post comments to inject event handlers by placing quotes in markdown image URLs. Attackers can store a crafted markdown image whose src breaks out of the attribute to add an onerror handler, executing JavaScript in viewers' browsers, including administrators.