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. This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to specify display names or IDs of item types. Jenkins 2.275, LTS 2.263.2 escapes display names and IDs of item types shown on the New Item page.
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. This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to specify display names or IDs of item types. Jenkins 2.275, LTS 2.263.2 escapes display names and IDs of item types shown on the New Item page.
https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2171 https://github.com/jenkinsci/jenkins/commit/8c451b08886561a914ef0c30cbb9d40ea33a9bbe
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