CVE-2017-2607

jenkins before versions 2.44, 2.32.2 is vulnerable to a persisted
cross-site scripting vulnerability in console notes (SECURITY-382). Jenkins
allows plugins to annotate build logs, adding new content or changing the
presentation of existing content while the build is running. Malicious
Jenkins users, or users with SCM access, could configure jobs or modify
build scripts such that they print serialized console notes that perform
cross-site scripting attacks on Jenkins users viewing the build logs.
To prevent this, console notes are now signed by Jenkins when
created, and Jenkins will only deserialize correctly signed console
notes. As a side effect, console notes created before updating to
a release containing this fix will no longer be deserialized. To
restore the previous (unsafe) behavior, set the system property
hudson.console.ConsoleNote.INSECURE to true as described on Features
controlled by system properties.