Cross-site scripting in ChurchCRM - CVE-2026-58411
Published: July 20, 2026
Vulnerability identifier: #VU138409
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-58411
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary JavaScript in the victim's browser.
The vulnerability exists due to cross-site scripting in request parameter handling in /FamilyCustomFieldsEditor.php, /PaddleNumList.php, and /admin/system/church-info when rendering attacker-controlled parameter names and values into JavaScript string contexts and HTML attribute contexts. A remote attacker can send a specially crafted request and trick a victim into visiting the malicious URL to execute arbitrary JavaScript in the victim's browser.
User interaction is required to visit a crafted URL.
Affected software
ChurchCRM
How to mitigate CVE-2026-58411
Install security update from vendor's website.
ChurchCRM - update to 7.4.0