SB2026013002 - Multiple vulnerabilities in ChurchCRM

Description

This security bulletin contains information about 2 vulnerabilities.

1) Stored cross-site scripting (CVE-ID: CVE-2026-24855)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Create Events within Church Calendar. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

2) SQL injection (CVE-ID: CVE-2026-24854)

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data in PaddleNumEditor.php. A remote user can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://github.com/ChurchCRM/CRM/security/advisories/GHSA-49qp-cfqx-c767
• https://github.com/ChurchCRM/CRM/security/advisories/GHSA-p3q7-q68q-h2gr