ChurchCRM Referer server-side request forgery

published 2025-04-26 18 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-12477

cvss: 3.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits: 0; none known

A vulnerability, which was classified as problematic, has been found in ChurchCRM 5.16.0. Affected by this issue is some unknown functionality of the component Referer Handler. The manipulation leads to server-side request forgery. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 18 mo ago (2025-04-28)

Exploit prediction

0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

everydaysparkling.com https://everydaysparkling.com/ssrf-via-referrer-field-in-churchcrm-v5-16-0/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	3.1	3.7	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA	3.0	3.7	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N
CNA	4.0	6.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

n/a ChurchCRM

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

everydaysparkling.com /ssrf-via-referrer-field-in-churchcrm-v5-16-0/
exploit, third-party-advisory
vuldb.com /?id.306290
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.306290
signature, permissions-required, third-party-advisory, vdb-entry
vuldb.com /?submit.555938
third-party-advisory, vdb-entry

Sources

CVE List CVE-2025-3954
NVD CVE-2025-3954

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary