CVE-2015-5318
Jenkins before 1.638 and LTS before 1.625.2 uses a publicly accessible salt to generate CSRF protection tokens, which makes it easier for remote attackers to bypass the CSRF protection mechanism via a brute force attack.
Date published : 2015-11-25
https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2015-11-11