CVE-2026-34754
MantisBT allows unauthorized users to upload attachments to restricted issues via REST API
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
7th
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.
| CWE | CWE-284 |
| Vendor | mantisbt |
| Product | mantisbt |
| Published | May 19, 2026 |
| Last Updated | May 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for mantisbt mantisbt
Be the first to know when new medium vulnerabilities affecting mantisbt mantisbt are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
mantisbt / mantisbt
< 2.28.2