CVE-2026-52203 in MCMS
Summary
by MITRE • 07/17/2026
An issue in MCMS v.6.1.1 allows a remote attacker to obtain sensitive information via the source parameter.
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Analysis
by VulDB Data Team • 07/17/2026
The vulnerability identified in MCMS version 6.1.1 represents a sensitive data exposure issue that arises from improper input validation within the application's source parameter handling mechanism. This flaw falls under the category of information disclosure vulnerabilities and demonstrates a critical weakness in the system's security posture. The source parameter in question likely serves as an entry point for retrieving or processing data from various sources within the content management system, making it a prime target for malicious actors seeking to extract confidential information.
This vulnerability operates by allowing unauthorized remote access to sensitive data through manipulation of the source parameter, effectively bypassing normal access controls and authentication mechanisms. The flaw stems from inadequate sanitization and validation of user-supplied input, which enables attackers to craft malicious requests that can reveal system internals, configuration details, or other protected information. From a technical perspective, this vulnerability aligns with CWE-200, which specifically addresses "Information Exposure" and represents one of the most prevalent categories of security flaws in web applications. The attack vector requires minimal privileges as it operates remotely without requiring authentication, making it particularly dangerous for systems that are publicly accessible.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked data could potentially enable more sophisticated attacks such as privilege escalation or further exploitation of related system components. Attackers may leverage the exposed information to map system architecture, identify additional vulnerabilities, or craft targeted attacks against other system components. The implications are particularly severe given that MCMS is a content management system, which typically contains sensitive user data, administrative credentials, and system configuration details that could be exploited for unauthorized access or data manipulation.
Security professionals should implement immediate mitigations including input validation and sanitization of all user-supplied parameters, particularly those used for source identification or data retrieval. The implementation of proper access controls and authentication mechanisms should be reinforced to prevent unauthorized information access even if parameter manipulation occurs. Additionally, comprehensive logging and monitoring of source parameter usage can help detect anomalous behavior indicative of exploitation attempts. Organizations should also consider implementing web application firewalls and input filtering mechanisms to prevent malicious parameter injection. This vulnerability demonstrates the importance of following secure coding practices and adhering to defense-in-depth principles as outlined in the MITRE ATT&CK framework, where information gathering phases often precede more destructive attack activities. The remediation strategy should include thorough code review processes, regular security assessments, and adherence to industry standards such as OWASP Top Ten to prevent similar vulnerabilities from occurring in future system versions.