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mantisbt/mantisbt 2.27.3: known vulnerabilities · Page 2

Known vulnerabilities affecting mantisbt/mantisbt 2.27.3: 26. Compare the fixes below with your installed release.

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Vulnerabilities: 26

  1. CVE-2026-34754

    Medium · CVSS 4.3EPSS 0.25%Fix available

    MantisBT allows unauthorized users to upload attachments to restricted issues via REST API

    Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow an authenticated user to upload attachments to private Issues they are not authorized to access. This issue has been fixed in version 2.28.2.

    • Update to 2.28.2
    Published Updated
  2. CVE-2026-34744

    Medium · CVSS 5.3EPSS 0.36%Fix available

    MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues

    Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior permit a user to list and download their own attachments from an Issue created by another user even after it becomes private, bypassing read access revocation. The loss of confidentiality caused by this vulnerability is minimal, considering that only attachments previously uploaded by the user themselves remain accessible. This issue has been fixed in version 2.82.2.

    • Update to 2.28.2
    Published Updated
  3. CVE-2026-34579

    Medium · CVSS 5.3EPSS 0.36%Fix available

    MantisBT has an authorization bypass via private issue monitoring

    Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior are vulnerable to Authorization Bypass through the private issue monitoring feature . Using a crafted POST request to bug_monitor_add.php, a user with project-level access can add themselves as a monitor for a private issue they do not have access to. Despite displaying an Access Denied error, the application accepts the request and creates a monitor relationship for the private issue. Direct access to the private issue remains blocked, but the user will receive email notifications for updates, leading to disclosure of the private issue's metadata and con

    • Update to 2.28.2
    Published Updated
  4. CVE-2026-34463

    High · CVSS 8.6EPSS 0.44%Fix available

    MantisBT has Stored HTML Injection/XSS via Clone Issue Form

    Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior contain a Stored XSS vulnerability. When cloning an issue originating from a Project other than the current one, the clone form (bug_report_page.php) prepends the source Project name before the category selector without proper escaping, allowing an attacker able to to inject HTML if they can set the Project's name (which typically requires manager or administrator access level). This issue has been resolved in version 2.28.2.

    • Update to 2.28.2
    Published Updated
  5. CVE-2026-34390

    Medium · CVSS 5.1EPSS 0.43%Fix available

    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

    • Update to 2.28.2
    Published Updated
  6. CVE-2026-30849

    Critical · CVSS 9.3EPSS 1.76%Public exploitFix available

    MantisBT SOAP API has an authentication bypass vulnerability on MySQL

    Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions prior to 2.28.1 running on MySQL family databases are affected by an authentication bypass vulnerability in the SOAP API, as a result of an improper type checking on the password parameter. Other database backends are not affected, as they do not perform implicit type conversion from string to integer. Using a crafted SOAP envelope, an attacker knowing the victim's username is able to login to the SOAP API with their account without knowledge of the actual password, and execute any API function they have access to. Version 2.28.1 contains a patch. Disabling the SOAP API s

    • Update to 2.28.1
    Published Updated

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