Request Tracker (RT) 4.x before 4.0.25, 4.2.x before 4.2.14, and 4.4.x before 4.4.2 allows remote attackers to obtain sensitive information about cross-site request forgery (CSRF) verification tokens via a crafted URL.
https://forum.bestpractical.com/t/security-vulnerabilities-in-rt-2017-06-15/32016