CVE-2026-40598 Details
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.
A cross-site scripting (XSS) vulnerability has been identified in Mantis Bug Tracker (MantisBT) versions 2.28.1 and prior. The issue arises from improper escaping of the redirection page, which is sourced from the request's Referer header. This flaw allows an attacker to inject HTML. While modern browsers typically URL-encode special characters, certain server configurations could lead to cache poisoning, making this injection exploitable as a reflected XSS vulnerability.
Users can upgrade to MantisBT version 2.28.2 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 22, 2026CISA-ADP
Assessed May 23, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://mantisbt.org/bugs/view.php?id=37017 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/mantisbt/mantisbt/commit/b1ebc57763f104eb5f541b7b4d1ce6948168abd9 | [email protected] | Source CodeVendor |
| https://github.com/mantisbt/mantisbt/security/advisories/GHSA-6jh4-47v2-4g37 | [email protected] | AdvisoryRemedyVendor |
| https://mantisbt.org/bugs/view.php?id=37017 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Mantis Bug Tracker | <= 2.28.1 (semver) |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 23, 2026 | CVE Modified | CISA-ADP |
| May 22, 2026 | New CVE Received | [email protected] |