CVE-2026-35572

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

State: Published
Severity: 7.0 High
Published: Apr 7, 2026
Updated: Apr 7, 2026
Reserved: Apr 3, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
CRMChurchCRM	< 6.5.3Affected

References

https://github.com/ChurchCRM/CRM/security/advisories/GHSA-44x3-28jv-mrwq

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