CVE-2026-42071
High
Description
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 GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.
SeverityHigh
CVSS7.2
Exploit probability—
ProductMantisbt/mantisbt
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- mantisbt/mantisbt2.28.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mantisbt/mantisbtPackagist | 2.23.0 ≤ v < 2.28.2 | 2.28.2 |
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