CVE-2026-35572 SSRF via Referer header in ChurchCRM allows server-side HTTP/HTTPS requests to arbitrary hosts
Attackers can force the ChurchCRM server to make arbitrary HTTP/HTTPS requests via the Referer header, potentially accessing internal resources.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-35572?
CVE-2026-35572 is a high-severity server-side request forgery vulnerability in Churchcrm Churchcrm, published on 7 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2026-35572?
It affects 1 product.
Products include Churchcrm Churchcrm.
How do I fix CVE-2026-35572?
No fix has been published for CVE-2026-35572 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-35572 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35572 exists.
Other vulnerabilities in Churchcrm Churchcrm
Sources
Also known as GHSA-44x3-28jv-mrwq.