CVE-2026-34390

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 manageprojuseradd.php allow users having manageprojectthreshold access level manager by default to...

CVE-2026-34754

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...

CVE-2026-34970

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.28.1 and prior allow a bugnote author to access the note's Revisions page after losing access to the parent private issue. This issue has been fixed in version 2.28.2...

CVE-2026-34579

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 bugmonitoradd.php, a user with project-level access can add themselves as a monitor for a...

CVE-2026-34744

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...

CVE-2026-33052

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.28.0 and 2.28.1 allow a low-privileged authenticated user assigned the "addprofilethreshold" permission to create a global profile despite not having manageglobalprofilethreshold, by tampering with the userid parameter in a...

CVE-2026-40598

Mantis Bug Tracker MantisBT is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page retrieved from the request's Referer header allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode...

CVE-2026-39960

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.28.1 and below contain flawed logic that causes improper escaping of a textarea custom field's contents in the Update Issue page, bugupdatepage.php allowing an attacker to inject HTML and, if CSP settings permit, execute...

CVE-2026-34463

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 bugreportpage.php prepends the source Project name before the category selector...

CVE-2026-42071

Mantis Bug Tracker MantisBT is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user REPORTER+ to download attachments on private bugnotes they should not be able to access, via the REST API endpoint...

CVE-2026-40596

Mantis Bug Tracker MantisBT is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability...

CVE-2026-44655

Mantis Bug Tracker MantisBT is an open source issue tracker. From 1.3.0 to 2.28.1, unescaped Project Name allows an attacker that can set it which typically requires manager or administrator access level to inject HTML in Move Attachments admin page. This vulnerability is fixed in 2.28.2...

CVE-2026-44657

Mantis Bug Tracker MantisBT is an open source issue tracker. Prior to 2.28.2, using showinline=1 parameter and a valid fileshowinlinetoken CSRF token on filedownload.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability i...

CVE-2026-42070

Mantis Bug Tracker MantisBT is an open source issue tracker. Prior to 2.28.2, the mcissueupdate function in MantisBT allows users having updatebugthreshold access UPDATER, with default settings to edit, change view state, and modify time tracking on bugnotes belonging to other users — bypassing t...

CVE-2026-41897

Mantis Bug Tracker MantisBT is an open source issue tracker. From 1.0.0 to 2.28.1, lack of validation of filtertarget parameter on returndynamicfilters.php normally used as an AJAX in View Issues Page allows an attacker to inject arbitrary HTML if the target is a TEXTAREA custom field. This...

CVE-2026-44657

Mantis Bug Tracker MantisBT is an open source issue tracker. Prior to 2.28.2, using showinline=1 parameter and a valid fileshowinlinetoken CSRF token on filedownload.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability i...

CVE-2026-44655

Mantis Bug Tracker MantisBT is an open source issue tracker. From 1.3.0 to 2.28.1, unescaped Project Name allows an attacker that can set it which typically requires manager or administrator access level to inject HTML in Move Attachments admin page. This vulnerability is fixed in 2.28.2...

CVE-2026-42070

Mantis Bug Tracker MantisBT is an open source issue tracker. Prior to 2.28.2, the mcissueupdate function in MantisBT allows users having updatebugthreshold access UPDATER, with default settings to edit, change view state, and modify time tracking on bugnotes belonging to other users — bypassing t...

CVE-2026-41897

Mantis Bug Tracker MantisBT is an open source issue tracker. From 1.0.0 to 2.28.1, lack of validation of filtertarget parameter on returndynamicfilters.php normally used as an AJAX in View Issues Page allows an attacker to inject arbitrary HTML if the target is a TEXTAREA custom field. This...

CVE-2026-42071 MantisBT: Private Bugnote Attachment Content Leak via REST API

Mantis Bug Tracker MantisBT is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user REPORTER+ to download attachments on private bugnotes they should not be able to access, via the REST API endpoint...