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CVE-2026-39344— Reflected XSS the login page through the 'username' parameter

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 7.1.0之前版本存在安全漏洞，该漏洞源于登录页面username参数未清理或编码，可能导致反射型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.26% · P17
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I. Basic Information for CVE-2026-39344

Vulnerability Information
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Vulnerability Title
Reflected XSS the login page through the 'username' parameter
Source: CVE Program / CVE List V5
Vulnerability Description
ChurchCRM is an open-source church management system. Prior to 7.1.0, there is a Reflected Cross-Site Scripting (XSS) vulnerability on the login page, which is caused by the lack of sanitization or encoding of the username parameter received from the URL. The username parameter value is directly displayed in the login page input element without filter, allowing attackers to insert malicious JavaScript scripts. If successful, script can be executed on the client side, potentially stealing sensitive data such as session cookies or replacing the display to show the attacker's login form. This vulnerability is fixed in 7.1.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)
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 7.1.0之前版本存在安全漏洞，该漏洞源于登录页面username参数未清理或编码，可能导致反射型跨站脚本攻击。
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 < 7.1.0 -

II. Public POCs for CVE-2026-39344

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III. Intelligence Information for CVE-2026-39344

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Vendor Advisories for CVE-2026-39344 (1)

Same Patch Batch · ChurchCRM · 2026-04-07 · 28 CVEs total

CVE-2026-39337 10.0 CRITICAL ChurchCRM Affected by Unauthenticated RCE in Install Wizard
CVE-2026-35573 9.1 CRITICAL ChurchCRM has a Path traversal leads to RCE
CVE-2026-39339 9.1 CRITICAL ChurchCRM has an API Authentication Bypass
CVE-2026-39328 8.9 HIGH ChurchCRM has Stored XSS in Social Profile Fields
CVE-2026-39326 8.8 HIGH ChurchCRM has a Blind SQL injection in PropertyTypeEditor.php
CVE-2026-39334 8.8 HIGH ChurchCRM has a Blind SQL injection in SettingsIndividual.php
CVE-2026-39327 8.8 HIGH ChurchCRM has a SQL injection in MemberRoleChange.php
CVE-2026-39318 8.8 HIGH ChurchCRM has a DDL SQL Injection in GroupPropsFormRowOps.php
CVE-2026-39330 8.8 HIGH ChurchCRM has a Blind SQL injection in PropertyAssign.php
CVE-2026-39329 8.8 HIGH ChurchCRM has a Blind SQL injection in EventNames.php
CVE-2026-39319 8.8 HIGH ChurchCRM has a Second Order SQLI via FundRaiserEditor.php
CVE-2026-39332 8.7 HIGH ChurchCRM has Reflected Cross-Site Scripting (XSS) in GeoPage.php
CVE-2026-39333 8.7 HIGH ChurchCRM has Reflected XSS in DateStart/DateEnd parameters in FindFundRaiser.php
CVE-2026-35576 8.7 HIGH ChurchCRM has Stored Cross-Site Scripting (XSS) in Person Properties via PrintView.php
CVE-2026-39331 8.1 HIGH ChurchCRM has an API Authorization Bypass Allows Authenticated User to Deactivate, Modify,
CVE-2026-39340 8.1 HIGH ChurchCRM has a SQL Injection in PropertyTypeEditor.php via Incorrect Sanitizer Substituti
CVE-2026-39341 8.1 HIGH SQL injection in ChurchCRM.0
CVE-2026-35575 8.0 HIGH ChurchCRM has Stored XSS in Group Name
CVE-2026-35534 7.6 HIGH ChurchCRM has Stored XSS in PersonView.php via Facebook Field Attribute Injection
CVE-2026-35574 7.3 HIGH ChurchCRM has a Stored XSS in Person Profile - Add a Note

Showing top 20 of 28 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: CRM
Same vendor: ChurchCRM
Same weakness: CWE-80

V. Comments for CVE-2026-39344

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