CVE-2026-51077 in Dede
Summary
by MITRE • 07/28/2026
SQL injection vulnerability in Dede CMS v.5.7.118 allows a remote attacker to obtain sensitive information via the sqlquery parameter of the sys_sql_query.php component
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Analysis
by VulDB Data Team • 07/28/2026
This vulnerability represents a critical sql injection flaw in the widely used Dede CMS version 5.7.118 that resides within the sys_sql_query.php component. The security weakness manifests when the application fails to properly sanitize user input passed through the sqlquery parameter, allowing malicious actors to inject arbitrary sql commands directly into the database query execution flow. This particular vulnerability falls under the common weakness enumeration category of CWE-89 sql injection, which is classified as a high severity issue in the owasp top ten security risks. The flaw enables remote attackers to bypass authentication mechanisms and execute unauthorized database operations without requiring legitimate credentials or privileged access rights.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing sql payload within the sqlquery parameter of the sys_sql_query.php endpoint. This allows the attacker to manipulate the underlying database queries and potentially extract sensitive information such as user credentials, personal data, system configurations, and other confidential database contents. The vulnerability is particularly dangerous because it operates at the database layer where attackers can leverage the sql injection to perform data retrieval, modification, or deletion operations depending on the database user permissions. The attack vector is remote and requires no prior authentication, making it extremely accessible to threat actors.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential complete system compromise. Attackers can exploit this weakness to access administrative panels, modify website content, steal user sessions, or even escalate privileges within the database environment. In a production setting where Dede CMS is deployed for business websites, this vulnerability could result in significant data breaches, regulatory compliance violations, and reputational damage. The attack surface is particularly concerning given that Dede CMS is commonly used for content management systems across various industries including healthcare, finance, and government sectors where data protection is paramount.
Organizations should implement immediate mitigations such as input validation and parameterized queries to prevent sql injection attacks in the affected component. The recommended approach includes implementing proper sanitization of all user inputs passed through the sqlquery parameter, utilizing prepared statements with bound parameters, and restricting database user privileges to minimum required access levels. Security patches from the Dede CMS developers should be applied immediately to address this vulnerability, while network segmentation and intrusion detection systems should monitor for suspicious database query patterns. Additionally, regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the web application stack. This vulnerability demonstrates the critical importance of input validation and secure coding practices as outlined in the software security principles of the iso/iec 27001 standard and aligns with the attack techniques documented in the mitre att&ck framework under the credential access and persistence domains.