CVE-2025-55040: MuraCMS CSRF Vulnerability

CVE-2025-55040 Overview

CVE-2025-55040 is a Cross-Site Request Forgery (CSRF) vulnerability affecting MuraCMS through version 10.1.10. The vulnerability exists in the import form functionality, specifically within the cForm.importform function, which lacks proper CSRF token validation. This security flaw allows attackers to craft malicious webpages that, when visited by an authenticated administrator, can forge file upload requests to install attacker-controlled form definitions on the target MuraCMS website.

Critical Impact

Successful exploitation enables attackers to install malicious data collection forms on MuraCMS websites that can steal sensitive user information from site visitors.

Affected Products

• MuraCMS versions through 10.1.10
• MuraCMS installations with form import functionality enabled
• Websites running vulnerable MuraCMS versions without CSRF protection

Discovery Timeline

• 2026-03-18 - CVE CVE-2025-55040 published to NVD
• 2026-03-19 - Last updated in NVD database

Technical Details for CVE-2025-55040

Vulnerability Analysis

This CSRF vulnerability stems from the absence of anti-CSRF token validation in the form import functionality of MuraCMS. The cForm.importform function processes file upload requests without verifying that the request originated from a legitimate user action within the application. This allows external websites to submit forged requests on behalf of authenticated administrators who unknowingly visit malicious pages.

The attack requires user interaction—specifically, an authenticated administrator must visit a malicious webpage and select an attacker-generated ZIP file containing form definitions. Once the file is uploaded, the malicious form definitions are installed on the target MuraCMS website, creating data collection forms that appear legitimate but are designed to harvest sensitive information from site visitors.

Root Cause

The root cause of CVE-2025-55040 is the missing CSRF token validation in the cForm.importform function. CSRF protection mechanisms are designed to ensure that state-changing requests originate from the application itself rather than from external sources. Without this validation, the server cannot distinguish between legitimate form import requests initiated by administrators and forged requests submitted by malicious websites.

Attack Vector

The attack is network-based and requires an authenticated administrator to visit a malicious webpage while logged into the MuraCMS admin panel. The attacker creates a webpage containing a CSRF exploit that automatically generates a malicious ZIP file with form definitions. When the administrator selects and uploads this file, the forged request is sent to the vulnerable MuraCMS installation using the administrator's authenticated session.

The malicious form definitions, once imported, create legitimate-looking data collection forms on the target website. These forms can be designed to collect sensitive information from website visitors, such as personal details, credentials, or payment information, which is then exfiltrated to attacker-controlled servers.

Detection Methods for CVE-2025-55040

Indicators of Compromise

• Unexpected or unauthorized form definitions appearing in the MuraCMS form management interface
• Form imports logged without corresponding administrator-initiated actions
• New data collection forms on the website that were not created by authorized personnel
• Unusual outbound data transfers from form submissions to external endpoints

Detection Strategies

• Monitor MuraCMS audit logs for form import activities and correlate with administrator session activity
• Review form definitions for suspicious data collection fields or external submission endpoints
• Implement web application firewall (WAF) rules to detect CSRF attack patterns targeting MuraCMS endpoints
• Conduct periodic reviews of all forms deployed on the website to identify unauthorized additions

Monitoring Recommendations

• Enable comprehensive logging for all administrative actions in MuraCMS
• Set up alerts for form import operations occurring outside normal administrative workflows
• Monitor referrer headers on sensitive administrative endpoints to detect cross-origin requests
• Deploy endpoint detection solutions to identify administrators visiting known malicious domains

How to Mitigate CVE-2025-55040

Immediate Actions Required

• Upgrade MuraCMS to version 10.1.4 or later, which addresses this CSRF vulnerability
• Review all existing form definitions for unauthorized or suspicious entries and remove any malicious forms
• Educate administrators about CSRF attacks and the importance of not visiting untrusted websites while authenticated
• Consider implementing additional session isolation for administrative functions

Patch Information

Mura Software has addressed this vulnerability in version 10.1.4 and later releases. Organizations running affected versions should upgrade immediately. The fix implements proper CSRF token validation for the form import functionality, ensuring that only legitimate requests originating from within the MuraCMS admin interface are processed.

Workarounds

• Restrict access to the form import functionality to only essential personnel until patching is complete
• Implement network-level controls to limit administrative interface access to trusted IP addresses
• Configure web application firewall rules to block cross-origin POST requests to the form import endpoint
• Advise administrators to use separate browser profiles or sessions when accessing the MuraCMS admin panel

For more information about MuraCMS and security updates, visit the Mura Software Homepage.