Description
ChurchCRM is an open-source church management system. Prior to 6.5.3, a Stored Cross-Site Scripting (Stored XSS) vulnerability in the admin panel’s group-creation feature allows any user with group-creation privileges to inject malicious JavaScript that executes automatically when an administrator views the page. This enables attackers to steal the administrator’s session cookies, potentially leading to full administrative account takeover. This vulnerability is fixed in 6.5.3.
Affected products
churchcrm: churchcrm
References1
- github.com/ChurchCRM/CRM/security/advisories/GHSA-gc8q-2gw7-qj7w Third Party Advisory
Metrics
- CVSS 3.1
-
8.0
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 17 · as of 12 November 2026
- CWE
- CWE-79CWE-1004
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.