CVE-2026-39333: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ChurchCRM CRM
ChurchCRM is an open-source church management system. Prior to 7.1.0, he FindFundRaiser.php endpoint reflects user-supplied input (DateStart and DateEnd) into HTML input field attributes without proper output encoding for the HTML attribute context. An authenticated attacker can craft a malicious URL that executes arbitrary JavaScript when visited by another authenticated user. This constitutes a reflected XSS vulnerability. This vulnerability is fixed in 7.1.0.
AI Analysis
Technical Summary
ChurchCRM's FindFundRaiser.php endpoint before version 7.1.0 reflects user-supplied DateStart and DateEnd parameters into HTML input field attributes without proper output encoding for the HTML attribute context. This improper neutralization of input leads to a reflected cross-site scripting vulnerability (CWE-79). An attacker with authentication can create a malicious URL that triggers arbitrary JavaScript execution in the context of another authenticated user's browser. The vulnerability is addressed in ChurchCRM version 7.1.0.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary JavaScript in the browser of another authenticated user, potentially leading to session hijacking, unauthorized actions, or theft of sensitive information within the ChurchCRM application. The CVSS score is 8.7 (high severity), indicating a significant impact on confidentiality and integrity without affecting availability.
Mitigation Recommendations
Upgrade ChurchCRM to version 7.1.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Until upgrading, restrict access to authenticated users and avoid clicking untrusted URLs containing the vulnerable parameters.
CVE-2026-39333: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ChurchCRM CRM
Description
ChurchCRM is an open-source church management system. Prior to 7.1.0, he FindFundRaiser.php endpoint reflects user-supplied input (DateStart and DateEnd) into HTML input field attributes without proper output encoding for the HTML attribute context. An authenticated attacker can craft a malicious URL that executes arbitrary JavaScript when visited by another authenticated user. This constitutes a reflected XSS vulnerability. This vulnerability is fixed in 7.1.0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
ChurchCRM's FindFundRaiser.php endpoint before version 7.1.0 reflects user-supplied DateStart and DateEnd parameters into HTML input field attributes without proper output encoding for the HTML attribute context. This improper neutralization of input leads to a reflected cross-site scripting vulnerability (CWE-79). An attacker with authentication can create a malicious URL that triggers arbitrary JavaScript execution in the context of another authenticated user's browser. The vulnerability is addressed in ChurchCRM version 7.1.0.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary JavaScript in the browser of another authenticated user, potentially leading to session hijacking, unauthorized actions, or theft of sensitive information within the ChurchCRM application. The CVSS score is 8.7 (high severity), indicating a significant impact on confidentiality and integrity without affecting availability.
Mitigation Recommendations
Upgrade ChurchCRM to version 7.1.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are documented. Until upgrading, restrict access to authenticated users and avoid clicking untrusted URLs containing the vulnerable parameters.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-06T20:28:38.393Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d54667aaed68159a45f29b
Added to database: 4/7/2026, 6:01:11 PM
Last enriched: 4/7/2026, 6:16:15 PM
Last updated: 4/7/2026, 8:21:21 PM
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.