CVE-2025-55040 in MuraCMS
Summary
by MITRE • 03/18/2026
The import form CSRF vulnerability in MuraCMS through 10.1.10 allows attackers to upload and install malicious form definitions through a CSRF attack. The vulnerable cForm.importform function lacks CSRF token validation, enabling malicious websites to forge file upload requests that install attacker-controlled forms when an authenticated administrator visits a crafted webpage. Full exploitation of this vulnerability would require the victim to select a malicious ZIP file containing form definitions, which can be automatically generated by the exploit page and used to create data collection forms that steal sensitive information. Successful exploitation of the import form CSRF vulnerability could result in the installation of malicious data collection forms on the target MuraCMS website that can steal sensitive user information. When an authenticated administrator visits a malicious webpage containing the CSRF exploit and selects the attacker-generated ZIP file, their browser uploads and installs form definitions that create legitimate forms that could be designed with malicious content.
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2025-55040 represents a critical cross-site request forgery weakness within MuraCMS versions 10.1.10 and earlier, specifically affecting the cForm.importform function. This flaw stems from the complete absence of CSRF token validation mechanisms within the form import functionality, creating a significant attack surface that adversaries can exploit to manipulate authenticated administrator sessions. The vulnerability manifests when an authenticated administrator visits a malicious webpage that contains embedded CSRF attack vectors, allowing attackers to silently upload and install malicious form definitions without the administrator's knowledge or consent. According to CWE-352, this represents a classic cross-site request forgery vulnerability where the application fails to validate that requests originate from legitimate sources, making it particularly dangerous in environments where administrative privileges are frequently used.
The technical exploitation of this vulnerability requires a sophisticated attack chain that begins with the creation of a malicious webpage designed to automatically generate and prompt the administrator to select a malicious ZIP file containing crafted form definitions. The attacker-controlled ZIP archive can contain specially designed form templates that, when imported, create legitimate-looking forms that can be configured to collect sensitive user information including personal data, login credentials, or confidential business information. The vulnerability's impact is amplified by the fact that the import process appears to be a normal administrative function, making it difficult for administrators to detect malicious activity. The attack leverages the trust relationship between the browser and the target CMS, where the administrator's authenticated session is used to perform actions that would normally require explicit user consent, yet the malicious form definitions are silently installed without any visible warning to the administrator.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to establish persistent data collection mechanisms within the target website's infrastructure. Once malicious forms are installed, they can operate continuously to gather information from unsuspecting users who interact with the website, creating a stealthy data exfiltration channel that can remain undetected for extended periods. The vulnerability's exploitation requires the victim to actively select a malicious file, but this can be accomplished through social engineering techniques that make the file appear legitimate to the administrator. This attack vector aligns with ATT&CK technique T1059.001, where adversaries use command and scripting interpreters to execute malicious code, and T1566.001, which involves social engineering through spearphishing with malicious attachments. The installed forms can be configured to send collected data to attacker-controlled servers, potentially enabling credential theft, session hijacking, or other advanced persistent threat activities that could compromise the entire website infrastructure.
Organizations utilizing MuraCMS versions affected by CVE-2025-55040 should implement immediate mitigations including the application of the latest security patches, the implementation of proper CSRF token validation across all administrative functions, and the deployment of web application firewalls that can detect and block suspicious file upload patterns. Network monitoring should be enhanced to detect unusual file upload activities and form import operations, particularly those originating from unexpected sources or occurring during non-standard administrative hours. Additionally, administrators should be trained to recognize social engineering attempts and to verify the legitimacy of any file downloads or installations, particularly those that occur automatically or without explicit user confirmation. The vulnerability demonstrates the critical importance of implementing defense-in-depth strategies that combine multiple security controls to protect against sophisticated attack vectors that exploit trust relationships within web applications.