CVE-2020-10465 in PHPKB Standard Multi-Language
Summary
by MITRE
Reflected XSS in admin/edit-category.php in Chadha PHPKB Standard Multi-Language 9 allows attackers to inject arbitrary web script or HTML via the GET parameter p.
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Analysis
by VulDB Data Team • 05/11/2025
The vulnerability identified as CVE-2020-10465 represents a critical reflected cross-site scripting flaw within the Chadha PHPKB Standard Multi-Language version 9 content management system. This security weakness specifically affects the admin/edit-category.php component where user input is not properly sanitized or validated before being reflected back to the browser. The vulnerability occurs when attackers manipulate the GET parameter p to inject malicious scripts that execute in the context of authenticated administrator sessions. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is classified as a fundamental web application security flaw that enables attackers to inject client-side scripts into web pages viewed by other users.
The technical exploitation of this vulnerability requires minimal prerequisites as attackers only need to craft malicious URLs containing script payloads in the p parameter and convince administrators to click on these links. When an administrator accesses the malicious URL, the reflected script executes in their browser session, potentially allowing attackers to hijack administrator privileges, steal session cookies, or perform unauthorized actions within the application. The reflected nature of this XSS means that the malicious script is not stored on the server but rather reflected off the web server in response to the user's request, making it particularly challenging to detect and prevent through traditional server-side security measures.
The operational impact of this vulnerability extends beyond simple script execution as it compromises the integrity of the administrative interface and potentially the entire application. Attackers could leverage this vulnerability to modify category configurations, inject malicious content, or redirect administrators to phishing sites that could harvest credentials. The vulnerability is particularly dangerous because it targets administrative functions, meaning successful exploitation could lead to complete system compromise. This aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1566.001 for Phishing, as attackers could use the vulnerability to establish persistent access and expand their attack surface.
Mitigation strategies for CVE-2020-10465 should focus on implementing proper input validation and output encoding mechanisms throughout the application. The most effective immediate solution involves sanitizing all user inputs, particularly those used in reflected contexts, by implementing strict validation rules that reject or escape potentially dangerous characters. Organizations should also implement Content Security Policy headers to limit script execution and utilize proper parameterized queries to prevent injection attacks. Additionally, regular security assessments and web application firewalls should be deployed to detect and block malicious payloads. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies as recommended by OWASP Top 10 and NIST cybersecurity frameworks, particularly focusing on input validation and output encoding as core security controls to prevent reflected XSS attacks in web applications.