Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-42070— MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API

Quick assessment

Affected
mantisbt mantisbt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mantis Bug Tracker（MantisBT）是Mantis Bug Tracker开源的一个 bug 跟踪器。 Mantis Bug Tracker 2.28.2之前版本存在安全漏洞，该漏洞源于mc_issue_update()函数允许具有update_bug_threshold权限的用户编辑其他用户的bugnotes，绕过默认的DEVELOPER阈值。以下版本受到影响：2.28.2之前版本。

AI Predicted 5.6 Difficulty: Easy EPSS 0.45% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
mantisbt mantisbt < 2.28.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-42070

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API
Source: CVE Program / CVE List V5
Vulnerability Description
Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, the mc_issue_update() function in MantisBT allows users having update_bug_threshold access (UPDATER, with default settings) to edit, change view state, and modify time tracking on bugnotes belonging to other users — bypassing the default DEVELOPER (level 55) threshold required by the dedicated mc_issue_note_update() function. This vulnerability is fixed in 2.28.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Mantis Bug Tracker 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mantis Bug Tracker（MantisBT）是Mantis Bug Tracker开源的一个 bug 跟踪器。 Mantis Bug Tracker 2.28.2之前版本存在安全漏洞，该漏洞源于mc_issue_update()函数允许具有update_bug_threshold权限的用户编辑其他用户的bugnotes，绕过默认的DEVELOPER阈值。以下版本受到影响：2.28.2之前版本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mantisbt mantisbt < 2.28.2 -

II. Public POCs for CVE-2026-42070

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-42070

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-42070 (1)

Vendor Advisories for CVE-2026-42070 (3)

Same Patch Batch · mantisbt · 2026-05-28 · 5 CVEs total

CVE-2026-41897 MantisBT: Reflected XSS in Rendering Dynamic Custom Textarea Field
CVE-2026-42071 MantisBT: Private Bugnote Attachment Content Leak via REST 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
Same vendor: mantisbt
Same weakness: CWE-863

V. Comments for CVE-2026-42070

No comments yet

Leave a comment