Jenkins before versions 2.44, 2.32.2 is vulnerable to a remote code execution vulnerability involving the deserialization of various types in javax.imageio in XStream-based APIs (SECURITY-383).
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2608
https://github.com/jenkinsci/jenkins/commit/a814154695e23dc37542af7d40cacc129cf70722