MantisBT has a Private Bugnote Attachment Content Leak via REST API
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.
Impact
- REPORTER (access level 25) can view file attachments that were uploaded to private bugnotes by DEVELOPER/MANAGER/ADMIN users
- Private bugnotes are intended for internal developer discussion; their attachments (logs, screenshots, patches) should be equally protected
- The web UI is NOT affected — it filters through bugnote_get_all_visible_bugnotes() first
Patches
- 029d9d203d9e4ae96b3e59d552fa7395cc1e5071
Workarounds
None
Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue.
- Vishal Shukla
- Tristan Madani (@TristanInSec) from Talence Security
- Tang Cheuk Hei (@siunam321)
This advisory's contents was largely copied from Tristan's well-written report.
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de Composer | mantisbt/mantisbt | >= 2.23.0, < 2.28.2 | 2.28.2 |
Referencias
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-pw5x-2mf9-3xc8
- https://nvd.nist.gov/vuln/detail/CVE-2026-42071
- https://github.com/mantisbt/mantisbt/commit/029d9d203d9e4ae96b3e59d552fa7395cc1e5071
- https://github.com/advisories/GHSA-xjmx-cprh-646r
- https://github.com/mantisbt/mantisbt
- https://mantisbt.org/bugs/view.php?id=27039
- https://mantisbt.org/bugs/view.php?id=36985
- https://mantisbt.org/bugs/view.php?id=37092
- Vector CVSS
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N- Debilidad (CWE)
CWE-862- Plataforma
- Composer
- Paquete
mantisbt/mantisbt- Publicada
- 11.05.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-pw5x-2mf9-3xc8 - CC BY 4.0
Historial de vulnerabilidades: mantisbt/mantisbt
Todas las vulnerabilidades publicadas de este paquete (Paquete de Composer), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 74
- Primera → última
- 04.2022 07.2026
- Sin corrección
- 2
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 4
- Alta 20
- Media 49
- Baja 1
Divulgaciones por año
- 2022: 34
- 2023: 2
- 2024: 5
- 2025: 4
- 2026: 29
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MantisBT has a Private Bugnote Attachment Content Leak via REST API esta entrada
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