CVE-2020-10469 in PHPKB Standard Multi-Language
Summary
by MITRE
Reflected XSS in admin/manage-departments.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to inject arbitrary web script or HTML via the GET parameter sort.
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Analysis
by VulDB Data Team • 05/11/2025
The vulnerability CVE-2020-10469 represents a reflected cross-site scripting flaw in the Chadha PHPKB Standard Multi-Language version 9 content management system. This security weakness specifically affects the admin/manage-departments.php administrative interface component, where user-supplied input is not properly sanitized before being reflected back to the browser. The vulnerability is triggered through the GET parameter named 'sort', which is commonly used for sorting table data in web applications. When an attacker crafts a malicious URL containing crafted script code within the sort parameter, the application fails to validate or escape this input before displaying it to the authenticated administrator, creating a persistent XSS vector.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding practices within the PHPKB application. The sort parameter in the manage-departments.php script directly incorporates user input into the HTTP response without proper sanitization, allowing attackers to inject malicious JavaScript code that executes in the context of the administrator's browser session. This reflects a classic CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability, where the application fails to properly encode or escape user-controllable data before rendering it in web pages. The flaw operates under the principle that all user-supplied data should be treated as untrusted and properly escaped before being included in dynamic content.
The operational impact of this vulnerability is significant as it provides attackers with a means to execute arbitrary scripts within the administrative context of the vulnerable system. An attacker could potentially steal administrator session cookies, redirect users to malicious sites, modify departmental data, or even escalate privileges within the application. This represents a critical security risk since administrative access to a knowledge base management system can provide attackers with access to sensitive documentation, user data, and system configuration information. The vulnerability is particularly dangerous because it requires no authentication to exploit, as the reflected nature allows attackers to deliver malicious payloads through social engineering or phishing campaigns targeting administrators. According to ATT&CK framework, this vulnerability maps to T1059.007 - Command and Scripting Interpreter: JavaScript, as it enables execution of malicious JavaScript code in the victim's browser.
Mitigation strategies for CVE-2020-10469 should focus on implementing proper input validation and output encoding measures. The primary fix involves sanitizing all user-supplied input through proper validation and encoding before incorporating it into web page responses. This includes implementing a whitelist approach for valid sort parameters, using HTML escaping functions like htmlspecialchars in PHP, and employing Content Security Policy (CSP) headers to limit script execution. Organizations should also consider implementing proper access controls to restrict administrative access to trusted IP addresses and implement multi-factor authentication for administrative accounts. Additionally, regular security audits and input validation testing should be conducted to prevent similar vulnerabilities from emerging in other parts of the application. The vulnerability highlights the importance of following secure coding practices as outlined in OWASP Top 10 and the need for comprehensive security testing throughout the software development lifecycle.