RT (aka Request Tracker) before 4.0.23 and 4.2.x before 4.2.10 allows remote attackers to hijack sessions via an RSS feed URL.

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.

The MobileUI (aka RT-Extension-MobileUI) extension before 1.04 in Request Tracker (RT) 4.0.0 before 4.0.13, when using the file-based session store (Apache::Session::File) and certain authentication extensions, allows remote attackers to reuse unauthorized sessions and obtain user preferences and caches via unspecified vectors.

Cross-site scripting (XSS) vulnerability in the MobileUI (aka RT-Extension-MobileUI) extension before 1.04 in Request Tracker (RT) 4.0.0 before 4.0.13 allows remote attackers to inject arbitrary web script or HTML via the name of an attached file.

Best Practical Solutions RT 3.8.x before 3.8.15 and 4.0.x before 4.0.8, when GnuPG is enabled with a "Sign by default" queue configuration, uses a queue's key for signing, which might allow remote attackers to spoof messages by leveraging the lack of authentication semantics.

Best Practical Solutions RT 3.8.x before 3.8.15 and 4.0.x before 4.0.8, when GnuPG is enabled, allows remote attackers to configure encryption or signing for certain outbound e-mail, and possibly cause a denial of service (loss of e-mail readability), via an e-mail message to a queue's address.

Best Practical Solutions RT 3.8.x before 3.8.15 and 4.0.x before 4.0.8, when GnuPG is enabled, does not ensure that the UI labels unencrypted messages as unencrypted, which might make it easier for remote attackers to spoof details of a message's origin or interfere with encryption-policy auditing via an e-mail message to a queue's address.

Best Practical Solutions RT 3.8.x before 3.8.15 and 4.0.x before 4.0.8, when GnuPG is enabled, allows remote attackers to bypass intended restrictions on reading keys in the product's keyring, and trigger outbound e-mail messages signed by an arbitrary stored secret key, by leveraging a UI e-mail signing privilege.

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.

Best Practical Request Tracker (RT) 5 before 5.0.5 allows Information Disclosure via a transaction search in the transaction query builder.

Best Practical Request Tracker (RT) before 5.0.3 has an Open Redirect via a ticket search.

Best Practical Request Tracker (RT) before 4.4.6 and 5.x before 5.0.3 allows XSS via a crafted content type for an attachment.

Best Practical RT for Incident Response (RTIR) before 4.0.3 and 5.x before 5.0.3 allows SSRF via Scripted Action tools.

Best Practical RT for Incident Response (RTIR) before 4.0.3 and 5.x before 5.0.3 allows SSRF via the whois lookup tool.

Best Practical Request Tracker (RT) 4.2 before 4.2.17, 4.4 before 4.4.5, and 5.0 before 5.0.2 allows sensitive information disclosure via a timing attack against lib/RT/REST2/Middleware/Auth.pm.

The email-ingestion feature in Best Practical Request Tracker 4.1.13 through 4.4 allows denial of service by remote attackers via an algorithmic complexity attack on email address parsing.