CVE-2026-42071

HIGH

MantisBT: Private Bugnote Attachment Content Leak via REST API

Title source: cna
STIX 2.1

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.

References (5)

Core 5

Scores

CVSS v4 7.2
EPSS 0.0026
EPSS Percentile 17.1%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (2)
mantisbt/mantisbt 2.23.0 - 2.28.2Packagist
mantisbt/mantisbt >= 2.23.0, < 2.28.2
Published May 28, 2026
Tracked Since May 29, 2026