Jenkins Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2019-10404
Jenkins 2.196 and earlier LTS 2.176.3 and earlier did not escape the reason why a queue items is blcoked in tooltips resulting in a stored XSS vulnerability exploitable by users able to control parts of the reason a queue item is blocked such as label expressions not matching any idle executors.