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CVE-2026-34754
MantisBT allows unauthorized users to upload attachments to restricted issues via REST API
Medium4.3EPSS 0.25%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.25% · top 84% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistmantisbt/mantisbtGHSA-h4x5-gvx6-3rwc (opens in a new tab)
References (3)
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-h4x5-gvx6-3rwc (opens in a new tab)x_refsource_CONFIRM
- https://github.com/mantisbt/mantisbt/commit/b262b4d2835b81394d75356dead66e52a6275206 (opens in a new tab)x_refsource_MISC
- https://mantisbt.org/bugs/view.php?id=36976 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-h4x5-gvx6-3rwc (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-34754)Record last updated .