CVE-2026-34744 MEDIUM

CVE-2026-34744: MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues

Vendor Mantisbt
Product mantisbt
Weakness CWE-200 · Info exposure
Published May 19, 2026
Last update May 20, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

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