What is CVE-2026-39339?

CVE-2026-39339 is a critical-severity vulnerability in Churchcrm, classified under Improper Access Control. CVSS score: 9.1/10. Published 2026-04-07.

How severe is CVE-2026-39339?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Churchcrm

CVE-2026-39339

ChurchCRM is an open-source church management system. Prior to 7.1.0, a critical authentication bypass vulnerability in ChurchCRM's API middleware (ChurchCRM/Slim/Middleware/AuthMiddleware.php) allows unauthenticated attackers to access all protected API endpoints by including "api/public" anywhere in the request URL, leading to complete exposure of church member data and system information. This vulnerability is fixed in 7.1.0.

Published 2026-04-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.018 (78.5th percentile), scored 2026-10-19.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.018 · change: +0.005

Affected products

Churchcrm
Churchcrm Crm — versions < 7.1.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

github.com/ChurchCRM/CRM/security/advisories/GHSA-v3p2-mx78-pxhc (Third Party Advisory)

Frequently asked questions

What is CVE-2026-39339?: CVE-2026-39339 is a critical-severity vulnerability in Churchcrm, classified under Improper Access Control. CVSS score: 9.1/10. Published 2026-04-07.
How severe is CVE-2026-39339?: Critical severity. CVSS v3 base score is 9.1 out of 10.