CVE-2006-5076 in Back-end Cms
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in OpenConcept Back-End 0.4.5 allow remote attackers to execute arbitrary PHP code via a URL in the includes_path parameter in (1) admin/index.php, (2) Facts.php, or (3) search.php.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/23/2026
The vulnerability identified as CVE-2006-5076 represents a critical remote file inclusion flaw within the OpenConcept Back-End version 0.4.5, a content management system that was widely used in web applications during the mid-2000s era. This vulnerability resides in the application's handling of user-supplied input through the includes_path parameter, which is processed in three distinct files: admin/index.php, Facts.php, and search.php. The flaw stems from the application's failure to properly validate or sanitize input parameters before using them in file inclusion operations, creating an exploitable condition that allows remote attackers to inject malicious URLs.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL and passes it through the includes_path parameter, which is then processed by the vulnerable PHP application. When the application attempts to include this file, it executes the malicious PHP code contained within the remote resource, effectively granting the attacker arbitrary code execution capabilities on the target system. This type of vulnerability is classified as a remote code execution vulnerability and falls under the Common Weakness Enumeration category CWE-88, which specifically addresses improper neutralization of special elements used in an expression, particularly in the context of command and URL injection attacks. The vulnerability's impact is amplified by the fact that it affects multiple entry points within the application, increasing the attack surface and the potential for successful exploitation.
From an operational perspective, this vulnerability presents a severe threat to the security posture of any system running the affected OpenConcept Back-End version. Successful exploitation allows attackers to execute arbitrary code, potentially leading to complete system compromise, data exfiltration, and persistence mechanisms. The vulnerability enables attackers to perform various malicious activities including but not limited to accessing sensitive data, modifying application functionality, establishing backdoors, and conducting further attacks against the internal network. According to the MITRE ATT&CK framework, this vulnerability maps to the technique T1059.001 for command and scripting interpreter, specifically PHP, and T1078 for valid accounts, as attackers may leverage this vulnerability to gain persistent access to compromised systems. The vulnerability's remote nature means that attackers do not require physical access to the system and can exploit it from anywhere on the internet.
The recommended mitigations for this vulnerability involve immediate patching of the affected application to the latest available version that addresses the remote file inclusion flaw. Organizations should implement proper input validation and sanitization mechanisms to prevent user-supplied data from being used in file inclusion operations. The principle of least privilege should be applied to the application's file inclusion functions, ensuring that only trusted paths are accepted. Additionally, implementing web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts. Security configurations should disable remote file inclusion capabilities in PHP settings where possible, and all input parameters should be validated against a strict whitelist of acceptable values. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues in the application codebase, following the security best practices outlined in the OWASP Top Ten and other industry standards for secure coding practices.