What is CVE-2026-39941?

CVE-2026-39941 is a medium-severity vulnerability in Churchcrm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-09.

How severe is CVE-2026-39941?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Churchcrm

CVE-2026-39941

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-04-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (30.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Churchcrm
Churchcrm Crm — versions < 7.1.0

Weakness classification (CWE)

References

github.com/ChurchCRM/CRM/security/advisories/GHSA-4mqw-9jww-2c58 (Exploit, Vendor Advisory)
github.com/ChurchCRM/CRM/commit/d2f7f36e2ea342419026ddc4bc4ea8efbf5e7e98 (Patch)
github.com/ChurchCRM/CRM/releases/tag/7.1.0 (Product, Release Notes)

Frequently asked questions

What is CVE-2026-39941?: CVE-2026-39941 is a medium-severity vulnerability in Churchcrm, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-09.
How severe is CVE-2026-39941?: Medium severity. CVSS v3 base score is 6.1 out of 10.