Jenkins Dashboard View Plugin 2.18 and earlier does not perform URL validation for the Iframe Portlet's Iframe source URL, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to configure views.
https://github.com/advisories/GHSA-6fg4-36v7-xv32
https://www.jenkins.io/security/advisory/2022-03-15/#SECURITY-2559