What’s Vulnerable › Vulnerabilities

CVE-2025-55155: MantisBT: Authentication bypass for some passwords due to PHP type juggling

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-11-04 · updated 2026-10-19
• Weakness: CWE-201

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.27.1 and below, when a user edits their profile to change their e-mail address, the system saves it without validating that it actually belongs to the user. This could result in storing an invalid email address, preventing the user from receiving system notifications. Notifications sent to another person's email address could lead to information disclosure. This issue is fixed in version 2.27.2.

Affected products

• mantisbt: before 2.27.2 — fixed in 2.27.2

How to fix

Upgrade to a fixed version: mantisbt 2.27.2. Check the vendor advisory for mitigations.

References

• https://github.com/mantisbt/mantisbt/commit/21e9fbedde8553c29c0d3156e84f78157fc4f22e
• https://github.com/mantisbt/mantisbt/security/advisories/GHSA-q747-c74m-69pr
• https://mantisbt.org/bugs/view.php?id=36005

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