CVE-2006-5066 in DanPHPSupport
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in DanPHPSupport 0.5, and other versions before 1.0, allow remote attackers to inject arbitrary web script or HTML via the (1) page parameter in index.php or the (2) do parameter in admin.php.
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Analysis
by VulDB Data Team • 04/23/2026
The vulnerability identified as CVE-2006-5066 represents a critical cross-site scripting flaw affecting DanPHPSupport version 0.5 and earlier versions up to 1.0. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is a fundamental web application security weakness that allows attackers to inject malicious scripts into web pages viewed by other users. The flaw specifically exists in the input validation mechanisms of the application's core files, creating a pathway for remote code execution through web script injection.
The technical implementation of this vulnerability occurs through two distinct attack vectors within the application's codebase. The first vector involves the page parameter in index.php, where user input is not properly sanitized before being rendered in the web page context. The second vector targets the do parameter in admin.php, which similarly fails to validate or escape user-supplied data before incorporating it into the application's response. Both parameters represent common entry points for XSS attacks where unfiltered user input directly influences the dynamic content generation process, allowing attackers to inject malicious HTML or JavaScript code that executes in the victim's browser context.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to perform session hijacking, deface web applications, steal sensitive user data, or redirect victims to malicious websites. When exploited, these vulnerabilities enable attackers to manipulate the application's behavior and potentially gain unauthorized access to user sessions or administrative functions. The vulnerability affects the entire user base of affected versions, making it particularly dangerous as it can be exploited by anyone who interacts with the vulnerable application, regardless of their administrative privileges or role within the system.
Security practitioners should implement multiple layers of defense to mitigate this vulnerability. The primary remediation involves input validation and output encoding for all user-supplied parameters, specifically ensuring that the page parameter in index.php and the do parameter in admin.php undergo proper sanitization before any processing or rendering occurs. This approach aligns with the OWASP Top Ten security practices and ATT&CK framework techniques for preventing code injection vulnerabilities. Organizations should also consider implementing Content Security Policy headers, input validation libraries, and regular security code reviews to prevent similar issues in future development cycles. The vulnerability demonstrates the critical importance of proper input validation in web applications and serves as a reminder that even minor oversights in parameter handling can lead to significant security breaches affecting user privacy and application integrity.