core/string_api.php in Mantis before 1.1.3 does not check the privileges of the viewer before composing a link with issue data in the source anchor, which allows remote attackers to discover an issue's title and status via a request with a modified issue number.

manage_proj_page.php in Mantis before 1.1.4 allows remote authenticated users to execute arbitrary code via a sort parameter containing PHP sequences, which are processed by create_function within the multi_sort function in core/utility_api.php.

Mantis before 1.1.3 does not unset the session cookie during logout, which makes it easier for remote attackers to hijack sessions.

Cross-site scripting (XSS) vulnerability in return_dynamic_filters.php in Mantis before 1.1.2 allows remote attackers to inject arbitrary web script or HTML via the filter_target parameter.

Eval injection vulnerability in adm_config_set.php in Mantis before 1.1.2 allows remote authenticated administrators to execute arbitrary code via the value parameter.

Directory traversal vulnerability in core/lang_api.php in Mantis before 1.1.2 allows remote attackers to include and execute arbitrary files via the language parameter to the user preferences page (account_prefs_update.php).

Cross-site request forgery (CSRF) vulnerability in manage_user_create.php in Mantis 1.1.1 allows remote attackers to create new administrative users via a crafted link.

Cross-site scripting (XSS) vulnerability in Mantis before 1.1.1 allows remote attackers to inject arbitrary web script or HTML via vectors related to the "Most active bugs" summary.