CVE-2006-5118 in Web Development Division
Summary
by MITRE
PHP remote file inclusion vulnerability in index.php3 in the PDD package for PHPSelect Web Development Division allows remote attackers to execute arbitrary PHP code via a URL in the Application_Root parameter.
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Analysis
by VulDB Data Team • 04/23/2026
The CVE-2006-5118 vulnerability represents a critical remote file inclusion flaw within the PDD package for PHPSelect Web Development Division, specifically affecting the index.php3 script. This vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately restrict user-supplied data from being directly incorporated into file inclusion operations. The flaw manifests when the Application_Root parameter receives a URL value that is subsequently processed by a vulnerable include or require statement, creating an avenue for attackers to inject malicious code from remote servers. This type of vulnerability falls under the broader category of insecure direct object references and remote code execution vulnerabilities that have been consistently documented in security frameworks and threat intelligence reports.
The technical exploitation of this vulnerability relies on the PHP language's ability to include and execute files from remote locations when provided with valid URLs in the Application_Root parameter. Attackers can craft malicious URLs that point to attacker-controlled servers hosting malicious PHP scripts, which then get executed within the context of the vulnerable web application. This creates a persistent threat vector where remote adversaries can gain unauthorized access to the affected system and execute arbitrary commands. The vulnerability demonstrates a classic lack of proper input validation and the dangerous practice of directly incorporating user-supplied parameters into file inclusion operations without adequate sanitization. From a cybersecurity perspective, this vulnerability aligns with CWE-98 and CWE-22 categories, representing improper input validation and path traversal issues respectively, which are fundamental weaknesses in web application security architectures.
The operational impact of CVE-2006-5118 extends beyond simple code execution to encompass full system compromise potential, as attackers can leverage this vulnerability to establish persistent backdoors, exfiltrate sensitive data, or use the compromised server as a launch point for further attacks within the network infrastructure. The vulnerability affects the integrity and confidentiality of the web application environment, potentially exposing sensitive user data, application source code, and underlying system information. Organizations running vulnerable versions of PHPSelect PDD package face significant risk of unauthorized access and data breaches, particularly in environments where the application handles sensitive information or serves as a gateway to internal systems. This vulnerability also demonstrates the importance of following secure coding practices such as those outlined in the OWASP Top Ten and the CERT/CC secure coding guidelines, which emphasize the necessity of input validation and parameter sanitization.
Mitigation strategies for CVE-2006-5118 should focus on immediate patching of the vulnerable software components, implementing strict input validation mechanisms, and configuring web application firewalls to block suspicious URL patterns. Organizations should disable the problematic functionality that allows remote file inclusion, implement proper parameter sanitization before any file inclusion operations, and establish robust monitoring systems to detect anomalous file access patterns. The vulnerability highlights the critical need for regular security assessments and vulnerability management programs that can identify and remediate such flaws before they can be exploited by malicious actors. Additionally, implementing the principle of least privilege and maintaining up-to-date security patches across all web application components remains essential in preventing exploitation of similar vulnerabilities that may exist in other parts of the application stack. From an ATT&CK framework perspective, this vulnerability maps to techniques involving remote code execution and privilege escalation, emphasizing the need for comprehensive defensive measures across multiple attack phases.