CVE-2026-51078 in Dede
Summary
by MITRE • 07/28/2026
An issue in Dede CMS v.5.7.118 allows a remote attacker to obtain sensitive information via the str parameter of the file_manage_control.php component
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Analysis
by VulDB Data Team • 07/28/2026
The vulnerability exists within Dede CMS version 5.7.118 where the file_manage_control.php component fails to properly validate or sanitize the str parameter, creating an information disclosure weakness that can be exploited remotely by attackers. This flaw represents a classic case of insufficient input validation that allows unauthorized access to system resources and potentially sensitive data.
The technical implementation of this vulnerability stems from improper handling of user-supplied input within the file management control interface. When the str parameter is processed without adequate sanitization measures, it enables attackers to manipulate the application's file operations and potentially access restricted directories or files. This type of vulnerability falls under CWE-20, which encompasses improper input validation, and specifically relates to CWE-200, information exposure, where sensitive data becomes accessible to unauthorized parties.
The operational impact of this vulnerability extends beyond simple information disclosure as it provides attackers with potential pathways for further exploitation within the compromised system. An attacker could leverage this weakness to enumerate directory structures, access configuration files that may contain database credentials or other sensitive information, and potentially gain insights into the overall system architecture. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the server infrastructure.
Security professionals should implement immediate mitigations including input validation controls that sanitize all user-supplied parameters before processing, particularly within file management components. The application should enforce strict access controls and implement proper authentication mechanisms to prevent unauthorized access attempts. Additionally, regular security updates and patch management procedures should be maintained to address known vulnerabilities in content management systems.
According to ATT&CK framework, this vulnerability maps to T1213.002, where adversaries access data through file and directory permissions, and potentially T1566.001 for initial access through web applications. Organizations should conduct comprehensive security assessments of their CMS installations to identify similar input validation weaknesses across all web application components.
The remediation approach requires implementing proper parameter validation techniques that restrict input to expected formats and lengths while ensuring appropriate authorization checks are enforced before any file operations are executed. Regular penetration testing and vulnerability scanning should be conducted to identify potential information disclosure scenarios within the application's file handling mechanisms, particularly in administrative interfaces that manage sensitive system resources.