CVE-2026-34390— MantisBT: Privilege Escalation from Manager to Administrator

MantisBT: Privilege Escalation from Manager to Administrator

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior have a Privilege Escalation vulnerability where insufficient access control checks in ProjectUsersAddCommand (manage_proj_user_add.php) allow users having manage_project_threshold access level (manager by default) to grant project-level administrator access to any user (including themselves) in any Project they have manager rights in. The normal project-user add form restricts the selectable access levels to the actor's own project role or below. However, the backend handler still accepts a forged higher access_level value and writes it. The consequences of the privilege escalation are slight, as having administrator access at Project level is effectively not very different from being manager, and it does not actually give administrator privileges on the whole MantisBT instance. In particular, it does not let the upgraded user delete the Project or grant them any access to global administrative functions such as managing Users, Projects, Plugins, Custom Fields, etc. This issue has been fixed in version 2.28.2.

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访问控制不恰当

Mantis Bug Tracker 访问控制错误漏洞

Mantis Bug Tracker（MantisBT）是Mantis Bug Tracker开源的一个 bug 跟踪器。 Mantis Bug Tracker 2.28.1及之前版本存在访问控制错误漏洞，该漏洞源于ProjectUsersAddCommand中访问控制检查不足，允许具有manage_project_threshold访问级别的用户向任何用户授予项目级管理员访问权限，可能导致权限提升。

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