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CVE-2026-40485

ChurchCRM: Username Enumeration via Differential Response in Public Login API

Published: Apr 17, 2026Updated: Apr 17, 2026 Sources: CVE List
NVD MITRE
5.3CVSS
MEDIUM

ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the public API login endpoint (/api/public/user/login) returns distinguishable HTTP response codes based on whether a username exists: 404 for non-existent users and 401 for valid users with incorrect passwords. An unauthenticated attacker can exploit this difference to enumerate valid usernames, with no rate limiting or account lockout to impede the process. This issue has been fixed in version 7.2.0.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None

Weaknesses

CWE-307CWE-307: Improper Restriction of Excessive Authentication AttemptsCWE-204CWE-204: Observable Response Discrepancy

Affected Products

CRM
ChurchCRM

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://github.com/ChurchCRM/CRM/security/advisories/GHSA-x2qh-xmhq-4jpx
github.com
https://github.com/ChurchCRM/CRM/pull/8607
github.com
https://github.com/ChurchCRM/CRM/commit/214694eb83778e1f5e52b3dfa2a99d0e965c1850
github.com

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