CVE-2026-42071— MantisBT: Private Bugnote Attachment Content Leak via REST API
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2026-42071
Vulnerability Information
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Vulnerability Title
MantisBT: Private Bugnote Attachment Content Leak via REST API
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制缺失
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42071
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-42071 (1)
Vendor Advisories for CVE-2026-42071 (4)
Same Patch Batch · mantisbt · 2026-05-28 · 5 CVEs total
| CVE-2026-41897 | MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea Field | |
| CVE-2026-42070 | MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API | |
| CVE-2026-44657 | MantisBT: Stored XSS in File Download | |
| CVE-2026-44655 | MantisBT: Stored XSS on Move Attachments Admin Page |
IV. Related Vulnerabilities
Same product: mantisbt
- CVE-2026-42070
MantisBT: Authorization Bypass in Bugnote Editing via Issue - CVE-2026-44655
MantisBT: Stored XSS on Move Attachments Admin Page - CVE-2026-41897
MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea - CVE-2026-44657
MantisBT: Stored XSS in File Download - CVE-2026-40607
MantisBT is Vulnerable to Stored XSS Through its Saved-Filte
Same vendor: mantisbt
- CVE-2026-42070
MantisBT: Authorization Bypass in Bugnote Editing via Issue - CVE-2026-44655
MantisBT: Stored XSS on Move Attachments Admin Page - CVE-2026-41897
MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea - CVE-2026-44657
MantisBT: Stored XSS in File Download - CVE-2026-40607
MantisBT is Vulnerable to Stored XSS Through its Saved-Filte
Same weakness: CWE-862
- CVE-2026-44848
Portainer: Missing authorization on Docker plugin endpoints - CVE-2026-44849
Portainer: Endpoint security bypass via Swarm service create - CVE-2026-44884
Portainer: Missing authorization on custom template file end - CVE-2026-44794
Nautobot: REST API permits creation of GenericForeignKey ref - CVE-2026-6937
Appointment Booking Calendar <= 1.6.11.8 - Missing Authoriza
V. Comments for CVE-2026-42071
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