Jenkins Credentials Plugin prior to 2.3.19, 2.3.15.1, 2.3.14.1, 2.3.13.1, 2.3.7.1, and 2.3.0.1 does not escape user-controlled information on a view it provides, resulting in a reflected cross-site scripting (XSS) vulnerability.
Jenkins Credentials Plugin 2.3.19, 2.3.15.1, 2.3.14.1, 2.3.13.1, 2.3.7.1, and 2.3.0.1 restricts the user-controlled information it provides to a safe subset.