Published April 7, 2026 · Updated April 8, 2026
CVE-2026-39344 is a reflected cross-site scripting (XSS) vulnerability affecting ChurchCRM versions prior to 7.1.0. The issue arises from improper sanitization of the username parameter in the login page, enabling attackers to execute malicious JavaScript on client browsers. Users should upgrade to ChurchCRM version 7.1.0 or later to mitigate this risk.
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.
CVE-2026-39344 is a high-severity Reflected XSS vulnerability in ChurchCRM versions before 7.1.0, allowing attackers to inject JavaScript through the login page. Users should update to version 7.1.0 to mitigate this risk.