Incorrect authorization in ChurchCRM - #VU152742
Published: September 29, 2026
Vulnerability identifier: #VU152742
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose events from other calendars, including private calendars.
The vulnerability exists due to improper authorization in PublicCalendarMiddleware::getEvents() when handling public calendar requests containing a start parameter. A remote user can send a request containing a start parameter to disclose events from other calendars, including private calendars.
The external calendar API must be enabled, and a public calendar access token must be available.
Affected software
ChurchCRM
Remediation
Install security update from vendor's website.
ChurchCRM - update to 7.6.1