CVE-2026-34754 MEDIUM

CVE-2026-34754: MantisBT allows unauthorized users to upload attachments to restricted issues via REST API

Vendor Mantisbt
Product mantisbt
Weakness CWE-284
Published May 19, 2026
Last update May 20, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 19, 2026 CVE published
May 20, 2026 Record updated