CVE-2006-5920 in Exporia
Summary
by MITRE
PHP remote file inclusion vulnerability in common.php in Yuuki Yoshizawa Exporia 0.3.0 allows remote attackers to execute arbitrary PHP code via a URL in the lan parameter. NOTE: SecurityFocus disputes this issue, saying "further analysis reveals that the application is not vulnerable." NOTE: this issue may overlap CVE-2006-5113
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Analysis
by VulDB Data Team • 04/27/2026
The vulnerability described in CVE-2006-5920 pertains to a remote file inclusion flaw discovered in the Yuuki Yoshizawa Exporia 0.3.0 web application, specifically within the common.php file. This type of vulnerability represents a critical security weakness that allows remote attackers to execute arbitrary code on the target system by manipulating input parameters. The flaw manifests through the lan parameter, which is susceptible to manipulation by external actors seeking to inject malicious URLs. The vulnerability falls under the category of remote code execution, which constitutes a severe threat level according to cybersecurity standards and threat modeling frameworks.
The technical implementation of this vulnerability involves improper input validation and sanitization within the application's parameter handling mechanisms. When the lan parameter is processed in common.php, the application fails to properly validate or sanitize user-supplied input before incorporating it into file inclusion operations. This creates an opportunity for attackers to inject malicious URLs that point to remote servers hosting malicious PHP code. The vulnerability demonstrates characteristics consistent with CWE-98, which describes improper file inclusion vulnerabilities that allow attackers to include arbitrary files. The flaw essentially enables attackers to bypass normal access controls and execute unauthorized code within the application's execution context.
From an operational impact perspective, this vulnerability presents significant risks to organizations deploying the affected software. Successful exploitation could allow attackers to execute arbitrary commands on the web server, potentially leading to complete system compromise, data exfiltration, or service disruption. The remote nature of the attack means that adversaries do not require physical access or local credentials to exploit the vulnerability. This makes the attack surface particularly concerning as it can be leveraged from anywhere on the internet. The vulnerability's potential for escalation aligns with tactics described in the MITRE ATT&CK framework under T1059, which covers execution techniques, and T1190, which addresses exploitation of remote services.
Security researchers have expressed skepticism regarding the validity of this specific vulnerability report, with SecurityFocus stating that "further analysis reveals that the application is not vulnerable." This dispute highlights the complexity of vulnerability assessment and the importance of thorough verification processes. The conflicting reports underscore the need for comprehensive analysis and testing before definitively classifying a security issue. The vulnerability may also overlap with CVE-2006-5113, suggesting that the reported issue might be a duplicate or related variant of another existing vulnerability. Such overlaps are common in vulnerability databases and require careful analysis to determine the true scope and impact of security issues.
Organizations should implement multiple layers of mitigation strategies to address potential remote file inclusion vulnerabilities. Input validation and sanitization should be strengthened throughout the application's codebase, with particular attention to parameters that influence file operations. The use of allowlists for valid input values rather than denylists can significantly reduce the risk of malicious input being processed. Additionally, implementing proper secure coding practices including the use of include_once functions with validated paths, disabling remote file inclusion in PHP configurations, and employing web application firewalls can provide effective protection. Regular security assessments and code reviews should be conducted to identify and remediate similar vulnerabilities before they can be exploited by malicious actors. The vulnerability serves as a reminder of the importance of proper input validation and the potential consequences of inadequate security controls in web applications.