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CVE-2025-47776

CRITICAL CVSS 3.1: 9.1 EPSS 0.10%
Updated Nov 10, 2025
Mantisbt
Parameter Value
CVSS 9.1 (CRITICAL)
Affected Versions before 2.27.2
Fixed In 2.27.2
Type CWE-305
Vendor Mantisbt
Public PoC No

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Due to incorrect use of loose (==) instead of strict (===) comparison in the authentication code in versions 2.27.1 and below.PHP type juggling will cause certain MD5 hashes matching scientific notation to be interpreted as numbers. Instances using the MD5 login method allow an attacker who knows the victim's username and has access to an account with a password hash that evaluates to zero to log in without knowing the victim's actual password, by using any other password with a hash that also evaluates to zero This issue is fixed in version 2.27.2.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Mantisbt Mantisbt
cpe:2.3:a:mantisbt:mantisbt:*:*:*:*:*:*:*:*
2.27.2