The email gateway in RT (aka Request Tracker) 3.0.0 through 4.x before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to cause a denial of service (CPU and disk consumption) via a crafted email.

SQL injection vulnerability in Approvals/ in Request Tracker (RT) 4.0.10 and earlier allows remote attackers to execute arbitrary SQL commands via the ShowPending parameter. NOTE: the vendor disputes this issue, stating "We were unable to replicate it, and the individual that reported it retracted their report," and "we had verified that the claimed exploit did not function according to the author's claims.