What’s Vulnerable › Vulnerabilities

CVE-2026-39941: ChurchCRM has an XSS vulnerability

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-04-09 · updated 2026-10-26
• Weakness: CWE-79

Description

ChurchCRM is an open-source church management system. Prior to 7.1.0, an XSS vulnerability allows attacker-supplied input sent via a the EName and EDesc parameters in EditEventAttendees.php to be rendered in a page without proper output encoding, enabling arbitrary JavaScript execution in victims' browsers. This vulnerability is fixed in 7.1.0.

Affected products

• ChurchCRM CRM: before 7.1.0 — fixed in 7.1.0

How to fix

Upgrade to a fixed version: ChurchCRM CRM 7.1.0. Check the vendor advisory for mitigations.

References

• https://github.com/ChurchCRM/CRM/commit/d2f7f36e2ea342419026ddc4bc4ea8efbf5e7e98
• https://github.com/ChurchCRM/CRM/releases/tag/7.1.0
• https://github.com/ChurchCRM/CRM/security/advisories/GHSA-4mqw-9jww-2c58
• https://github.com/ChurchCRM/CRM/security/advisories/GHSA-4mqw-9jww-2c58

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