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CVE-2026-40485— ChurchCRM: Username Enumeration via Differential Response in Public Login API

Quick assessment

Affected
ChurchCRM CRM
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ChurchCRM是ChurchCRM开源的一个为教会打造的开源 CRM 系统。 ChurchCRM 7.2.0之前版本存在安全漏洞，该漏洞源于公共API登录端点返回可区分的HTTP响应码，可能导致用户名枚举攻击。

CVSS 5.3 · Medium EPSS 0.40% · P32
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I. Basic Information for CVE-2026-40485

Vulnerability Information
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Vulnerability Title
ChurchCRM: Username Enumeration via Differential Response in Public Login API
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ChurchCRM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ChurchCRM是ChurchCRM开源的一个为教会打造的开源 CRM 系统。 ChurchCRM 7.2.0之前版本存在安全漏洞，该漏洞源于公共API登录端点返回可区分的HTTP响应码，可能导致用户名枚举攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ChurchCRM CRM < 7.2.0 -

II. Public POCs for CVE-2026-40485

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III. Intelligence Information for CVE-2026-40485

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Patches & Fixes for CVE-2026-40485 (2)

Vendor Advisories for CVE-2026-40485 (1)

Same Patch Batch · ChurchCRM · 2026-04-17 · 7 CVEs total

CVE-2026-40484 9.1 CRITICAL ChurchCRM: Authenticated Remote Code Execution via Unrestricted PHP File Write in Database
CVE-2026-40581 8.1 HIGH ChurchCRM: Cross-Site Request Forgery (CSRF) in SelectDelete.php Leading to Permanent Data
CVE-2026-40483 5.4 MEDIUM ChurchCRM: Stored XSS in PledgeEditor.php via Donation Comment Field
CVE-2026-40480 ChurchCRM has Missing Object-Level Authorization / IDOR in `/api/person/{personId}`
CVE-2026-40482 ChurchCRM has Authenticated SQL Injection in `/api/families/byCheckNumber/{scanString}`
CVE-2026-40582 ChurchCRM: Authentication Bypass in `/api/public/user/login` Allows Bypass of 2FA and Acco

IV. Related Vulnerabilities

Same product: CRM
Same vendor: ChurchCRM
Same weakness: CWE-307

V. Comments for CVE-2026-40485

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