Best Practical Solutions RT 3.x before 3.8.12 and 4.x before 4.0.6 does not properly disable groups, which allows remote authenticated users to bypass intended access restrictions in opportunistic circumstances by leveraging a group membership.

Multiple cross-site request forgery (CSRF) vulnerabilities in Best Practical Solutions RT before 3.8.12 and 4.x before 4.0.6 allow remote attackers to hijack the authentication of arbitrary users.

Multiple cross-site scripting (XSS) vulnerabilities in Best Practical Solutions RT 3.x before 3.8.12 and 4.x before 4.0.6 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Best Practical Solutions RT 3.0.0 through 3.6.10, 3.8.0 through 3.8.9, and 4.0.0rc through 4.0.0rc7 allows remote authenticated users to obtain sensitive information by using the search interface, as demonstrated by retrieving encrypted passwords.

Multiple SQL injection vulnerabilities in Best Practical Solutions RT 2.0.0 through 3.6.10, 3.8.0 through 3.8.9, and 4.0.0rc through 4.0.0rc7 allow remote authenticated users to execute arbitrary SQL commands via unspecified vectors, as demonstrated by reading data.

Directory traversal vulnerability in Best Practical Solutions RT 3.2.0 through 3.6.10, 3.8.0 through 3.8.9, and 4.0.0rc through 4.0.0rc7 allows remote attackers to read arbitrary files via a crafted HTTP request.

Multiple cross-site scripting (XSS) vulnerabilities in Best Practical Solutions RT 2.0.0 through 3.6.10, 3.8.0 through 3.8.9, and 4.0.0rc through 4.0.0rc7 allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Best Practical Solutions RT before 3.8.9 does not perform certain redirect actions upon a login, which allows physically proximate attackers to obtain credentials by resubmitting the login form via the back button of a web browser on an unattended workstation after an RT logout.

Scrips_Overlay.pm in Best Practical Solutions RT before 3.8.9 does not properly restrict access to a TicketObj in a Scrip after a CurrentUser change, which allows remote authenticated users to obtain sensitive information via unspecified vectors, as demonstrated by custom-field value information, related to SQL logging.

Best Practical Solutions RT 3.x before 3.8.9rc2 and 4.x before 4.0.0rc4 uses the MD5 algorithm for password hashes, which makes it easier for context-dependent attackers to determine cleartext passwords via a brute-force attack on the database.