jenkins before versions 2.44, 2.32.2 is vulnerable to a persisted cross-site scripting in search suggestions due to improperly escaping users with less-than and greater-than characters in their names (SECURITY-388).
https://jenkins.io/security/advisory/2017-02-01/
https://github.com/jenkinsci/jenkins/commit/307ed31caba68a46426b8c73a787a05add2c7489