CVE-2026-39941: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ChurchCRM CRM
ChurchCRM versions prior to 7. 1. 0 contain a cross-site scripting (XSS) vulnerability in the EditEventAttendees. php component. The vulnerability arises from improper neutralization of attacker-supplied input in the EName and EDesc parameters, which are rendered without proper output encoding. This flaw allows execution of arbitrary JavaScript in the browsers of users who view the affected pages. The issue is fixed in ChurchCRM version 7. 1. 0. The vulnerability has a CVSS 4.
AI Analysis
Technical Summary
CVE-2026-39941 is a cross-site scripting vulnerability in ChurchCRM's EditEventAttendees.php script affecting versions before 7.1.0. Specifically, the EName and EDesc parameters accept input that is not properly encoded before being included in the web page output, enabling an attacker to inject and execute arbitrary JavaScript code in the context of the victim's browser session. This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation) and CWE-80 (Improper Neutralization of Script-Related HTML Tags). The vulnerability was publicly disclosed on April 9, 2026, and is fixed in version 7.1.0 of ChurchCRM.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser when viewing the affected page, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not require authentication and has a low attack complexity with no privileges or user interaction required beyond viewing the malicious content. The CVSS 4.0 score is 5.3 (medium severity). There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
Upgrade ChurchCRM to version 7.1.0 or later, where this XSS vulnerability has been fixed. Since this is a self-hosted product, administrators should apply the official update promptly to remediate the issue. Patch status is confirmed by the vendor stating the fix is included in version 7.1.0. No additional mitigations are specified or required beyond applying the update.
CVE-2026-39941: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ChurchCRM CRM
Description
ChurchCRM versions prior to 7. 1. 0 contain a cross-site scripting (XSS) vulnerability in the EditEventAttendees. php component. The vulnerability arises from improper neutralization of attacker-supplied input in the EName and EDesc parameters, which are rendered without proper output encoding. This flaw allows execution of arbitrary JavaScript in the browsers of users who view the affected pages. The issue is fixed in ChurchCRM version 7. 1. 0. The vulnerability has a CVSS 4.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-39941 is a cross-site scripting vulnerability in ChurchCRM's EditEventAttendees.php script affecting versions before 7.1.0. Specifically, the EName and EDesc parameters accept input that is not properly encoded before being included in the web page output, enabling an attacker to inject and execute arbitrary JavaScript code in the context of the victim's browser session. This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation) and CWE-80 (Improper Neutralization of Script-Related HTML Tags). The vulnerability was publicly disclosed on April 9, 2026, and is fixed in version 7.1.0 of ChurchCRM.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the victim's browser when viewing the affected page, potentially leading to session hijacking, defacement, or other client-side attacks. The vulnerability does not require authentication and has a low attack complexity with no privileges or user interaction required beyond viewing the malicious content. The CVSS 4.0 score is 5.3 (medium severity). There are no known exploits in the wild at the time of this report.
Mitigation Recommendations
Upgrade ChurchCRM to version 7.1.0 or later, where this XSS vulnerability has been fixed. Since this is a self-hosted product, administrators should apply the official update promptly to remediate the issue. Patch status is confirmed by the vendor stating the fix is included in version 7.1.0. No additional mitigations are specified or required beyond applying the update.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-07T22:40:33.820Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d7ce5e1cc7ad14dae8f927
Added to database: 4/9/2026, 4:05:50 PM
Last enriched: 4/9/2026, 4:21:06 PM
Last updated: 4/9/2026, 5:19:40 PM
Views: 4
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