EUVD-2026-19837CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/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
Lifecycle Timeline
3Description
ChurchCRM is an open-source church management system. Prior to 7.1.0, a Blind Reflected Cross-Site Scripting vulnerability exists in the search parameter accepted by the ChurchCRM dashboard. The application fails to sanitize or encode user-supplied input prior to rendering it within the browser's DOM. Although the application ultimately returns an HTTP 500 error due to the malformed API request caused by the payload, the browser's JavaScript engine parses and executes the injected <script> tags before the error response is returned - resulting in successful code execution regardless of the server-side error. This vulnerability is fixed in 7.1.0.
Analysis
Reflected cross-site scripting (XSS) in ChurchCRM's dashboard search parameter allows unauthenticated remote attackers to execute arbitrary JavaScript in victims' browsers. Versions prior to 7.1.0 fail to sanitize user input, enabling payload execution even when server-side validation triggers HTTP 500 errors. …
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Remediation
Within 24 hours: Inventory all ChurchCRM deployments and identify version numbers; disable or restrict public access to the dashboard search feature if possible. Within 7 days: Upgrade to ChurchCRM version 7.1.0 or later if patch availability is confirmed; if unavailable, implement Web Application Firewall (WAF) rules to block malicious payloads in search parameters and enforce Content Security Policy (CSP) headers. …
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