The access_has_bug_level function in core/access_api.php in MantisBT before 1.2.9 does not properly restrict access when the private_bug_view_threshold is set to an array, which allows remote attackers to bypass intended restrictions and perform certain operations on private bug reports.

bug_actiongroup.php in MantisBT before 1.2.9 does not properly check the report_bug_threshold permission of the receiving project when moving a bug report, which allows remote authenticated users with the report_bug_threshold and move_bug_threshold privileges for a project to bypass intended access restrictions and move bug reports to a different project.

MantisBT before 1.2.11 does not check the delete_attachments_threshold permission when form_security_validation is set to OFF, which allows remote authenticated users with certain privileges to bypass intended access restrictions and delete arbitrary attachments.

The mc_issue_note_update function in the SOAP API in MantisBT before 1.2.11 does not properly check privileges, which allows remote attackers with bug reporting privileges to edit arbitrary bugnotes via a SOAP request.

Multiple cross-site scripting (XSS) vulnerabilities in filter_api.php in MantisBT before 1.2.7 allow remote attackers to inject arbitrary web script or HTML via a parameter, as demonstrated by the project_id parameter to search.php.

Multiple cross-site scripting (XSS) vulnerabilities in MantisBT before 1.2.8 allow remote attackers to inject arbitrary web script or HTML via the (1) os, (2) os_build, or (3) platform parameter to (a) bug_report_page.php or (b) bug_update_advanced_page.php, related to use of the Projax library.

Directory traversal vulnerability in bug_actiongroup_ext_page.php in MantisBT before 1.2.8 allows remote attackers to include and execute arbitrary local files via a .. (dot dot) in the action parameter, related to bug_actiongroup_page.php.

Cross-site scripting (XSS) vulnerability in bug_actiongroup_ext_page.php in MantisBT before 1.2.8 allows remote attackers to inject arbitrary web script or HTML via the action parameter, related to bug_actiongroup_page.php, a different vulnerability than CVE-2011-3357.

Multiple cross-site scripting (XSS) vulnerabilities in config_defaults_inc.php in MantisBT before 1.2.8 allow remote attackers to inject arbitrary web script or HTML via the PATH_INFO, as demonstrated by the PATH_INFO to (1) manage_config_email_page.php, (2) manage_config_workflow_page.php, or (3) bugs/plugin.php.

admin/upgrade_unattended.php in MantisBT before 1.2.4 allows remote attackers to obtain sensitive information via an invalid db_type parameter, which reveals the installation path in an error message, related to an unsafe call by MantisBT to a function in the ADOdb Library for PHP.