What is CVE-2026-39333?

CVE-2026-39333 is a high-severity vulnerability in Churchcrm, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-04-07.

How severe is CVE-2026-39333?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Churchcrm

CVE-2026-39333

ChurchCRM is an open-source church management system. Prior to 7.1.0, he FindFundRaiser.php endpoint reflects user-supplied input (DateStart and DateEnd) into HTML input field attributes without proper output encoding for the HTML attribute context. An authenticated attacker can craft a malicious URL that executes arbitrary JavaScript when visited by another authenticated user. This constitutes a reflected XSS vulnerability. This vulnerability is fixed in 7.1.0.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (12.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Churchcrm
Churchcrm Crm — versions < 7.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2026-39333?: CVE-2026-39333 is a high-severity vulnerability in Churchcrm, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-04-07.
How severe is CVE-2026-39333?: High severity. CVSS v3 base score is 8.7 out of 10.