High severityGHSA Advisory· Published May 28, 2026· Updated May 29, 2026
CVE-2026-42071
CVE-2026-42071
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
mantisbt/mantisbtPackagist | >= 2.23.0, < 2.28.2 | 2.28.2 |
Affected products
2Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-pw5x-2mf9-3xc8ghsaADVISORY
- github.com/advisories/GHSA-xjmx-cprh-646rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-42071ghsaADVISORY
- github.com/mantisbt/mantisbt/commit/029d9d203d9e4ae96b3e59d552fa7395cc1e5071nvdWEB
- github.com/mantisbt/mantisbt/security/advisories/GHSA-pw5x-2mf9-3xc8nvdWEB
- mantisbt.org/bugs/view.phpnvdWEB
- mantisbt.org/bugs/view.phpnvdWEB
- mantisbt.org/bugs/view.phpnvdWEB
News mentions
1- MantisBT: Five Bugs Disclosed Together — XSS, Auth Bypass, and Missing Access ControlsVypr Intelligence · May 28, 2026