CVE-2026-40598

MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page

Published May 22, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page (retrieved from the request's Referer header) allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode special characters, on some specific server configurations this could poison the cache, leading to cross-site scripting. This issue has been fixed in version 2.28.2.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-6jh4-47v2-4g37 MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Mantisbt
Mantisbt mantisbt
Vendors & Products Mantisbt
Mantisbt mantisbt
Type Values Removed Values Added
Description Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.28.1 and below, improper escaping of the redirection page (retrieved from the request's Referer header) allows an attacker to inject HTML. While this is generally not directly actionable as modern browsers will URL-encode special characters, on some specific server configurations this could poison the cache, leading to cross-site scripting. This issue has been fixed in version 2.28.2.
Title MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 23, 2026, 2:41 AM
Reserved
Apr 14, 2026, 2:07 PM
Status
Deferred
Published
May 22, 2026, 8:16 PM
Modified
Jul 23, 2026, 4:10 PM