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CVE-2026-35574

Churchcrm cross-site scripting (XSS)

7.3 HIGHPublic exploitEPSS 0.37%
  1. Published7 Apr 2026

Description

ChurchCRM is an open-source church management system. Prior to 6.5.3, a stored Cross-Site Scripting (XSS) vulnerability in ChurchCRM's Note Editor allows authenticated users with note-adding permissions to execute arbitrary JavaScript code in the context of other users' browsers, including administrators. This can lead to session hijacking, privilege escalation, and unauthorized access to sensitive church member data. This vulnerability is fixed in 6.5.3.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Affected products

Churchcrm< 6.5.3

Remediation

Fixed in
Churchcrm≥ 6.5.3

References

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Frequently asked

Is CVE-2026-35574 being actively exploited?

CVE-2026-35574 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.37%.

How severe is CVE-2026-35574?

CVE-2026-35574 has a CVSS 3.1 base score of 7.3, rated high. EPSS estimates a 0.37% probability of exploitation.

Which products are affected by CVE-2026-35574?

Affected products include Churchcrm.

How do I fix CVE-2026-35574?

Upgrade affected software to a fixed version, for example Churchcrm 6.5.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-35574 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.