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TI-2026-27676 Aliases CVE-2026-35572

SSRF via Referer header in ChurchCRM allows server-side HTTP/HTTPS requests to arbitrary hosts

Priority MEDIUM 64CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

ChurchCRM is an open-source church management system. Prior to 6.5.3, it is possible to trigger server-side HTTP/HTTPS requests to arbitrary hosts (SSRF) by supplying a crafted URL in the Referer request header. The server subsequently makes an outbound request to the attacker-controlled domain, confirmed via OAST. This vulnerability is fixed in 6.5.3.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00308 23rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed CRM (ChurchCRM): 6.5.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ChurchCRMCRMbefore 6.5.36.5.3Patch availableCNA
  • CRM VendorChurchCRM Affected before 6.5.3 Fixed in 6.5.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:churchcrm:churchcrm:*:*:*:*:*:*:*:*before 6.5.3VulnerableChurchCRM
  • cpe:2.3:a:churchcrm:churchcrm:*:*:*:*:*:*:*:* Versions before 6.5.3 Vulnerable ·ChurchCRM

Remediation

  • Fix · CNA CRM (ChurchCRM) Fixed in 6.5.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35572

References

Exploit 1

  • TI-2026-28325 ChurchCRM Affected by Unauthenticated RCE in Install Wizard CVSS 3.1CRITICAL 10.0
  • TI-2025-38761 ChurchCRM has unauthenticated RCE in its Install Wizard CVSS 3.1CRITICAL 10.0
  • TI-2024-35802 EventAttendance.php in ChurchCRM 5.7.0 is vulnerable to SQL injection. CVSS 3.1CRITICAL 9.8
  • TI-2024-16997 ChurchCRM 5.5.0 /EventEditor.php is vulnerable to Blind SQL Injection (Time-based) via the EventCount POST parameter. CVSS 3.1CRITICAL 9.8
  • TI-2025-41969 ChurchCRM vulnerable to time-based blind SQL Injection in ConfirmReportEmail.php CVSS 4.0CRITICAL 9.3
  • TI-2025-00963 SQL Injection in ChurchCRM CurrentFundraiser Parameter via BatchWinnerEntry.php CVSS 4.0CRITICAL 9.3
See all 109 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences