Jenkins Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2021-21611
Jenkins 2.274 and earlier LTS 2.263.1 and earlier does not escape display names and IDs of item types shown on the New Item page resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to specify display names or IDs of item types.