CVE-2026-39940: Churchcrm CRM

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

ChurchCRM is an open-source church management system. Prior to 7.0.0, it was possible in many places across the ChurchCRM application to create a link that, when visited by an authenticated user, would redirect them to any URL chosen by an attacker if they clicked 'Cancel' button on the page. For this write-up the DonatedItemEditor.php will be used as an example, however wherever all instances of 'linkBack' should be assessed. This vulnerability is fixed in 7.0.0.

Affected products

• Churchcrm CRM: before 7.0.0 (fixed in 7.0.0)

Published 2026-04-13. Last modified 2026-06-17.