XSS in Churchcrm Crm
CVE-2026-40593
ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the User Editor (UserEditor.php) renders stored usernames directly into an HTML input value attribute without applying htmlspecialchars(). An administrator can save a username containing HTML attribute-breaking characters and event handlers, which execute in the browser of any administrator who subsequently views that user's editor page, resulting in stored XSS. This issue has been fixed in version 7.2.0.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (10.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Churchcrm Crm — versions < 7.2.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-40593?
- CVE-2026-40593 is a medium-severity vulnerability in Churchcrm Crm, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-04-18.
- How severe is CVE-2026-40593?
- Medium severity. CVSS v3 base score is 4.8 out of 10.