CVE-2009-4697 in RadNICS
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in index.php in RadNICS Gold 5 allow remote attackers to inject arbitrary web script or HTML via the (1) order parameter in a ulist action and the (2) fid parameter in a view_forum action.
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Analysis
by VulDB Data Team • 05/02/2026
The vulnerability described in CVE-2009-4697 represents a critical cross-site scripting flaw affecting RadNICS Gold 5, a web-based content management system that facilitates online forum operations. This vulnerability resides within the index.php file and demonstrates how insufficient input validation can create persistent security weaknesses in web applications. The flaw specifically targets two distinct parameters within different action contexts, highlighting the complexity of XSS vulnerabilities that can manifest across multiple attack vectors within a single application.
The technical implementation of this vulnerability stems from the application's failure to properly sanitize user-supplied input before incorporating it into dynamic web page content. When attackers manipulate the order parameter during a ulist action or the fid parameter during a view_forum action, they can inject malicious JavaScript code or HTML content that executes in the context of other users' browsers. This occurs because the application directly reflects user input without adequate encoding or filtering mechanisms, creating a pathway for attackers to execute arbitrary scripts against unsuspecting victims. The vulnerability operates under CWE-79 which categorizes improper neutralization of input during web output, specifically addressing cross-site scripting conditions where user-controllable data flows into web pages without proper validation.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it enables attackers to establish persistent malicious presence within the application environment. Successful exploitation allows threat actors to hijack user sessions, steal sensitive information, redirect users to malicious websites, or even execute commands on behalf of authenticated users. The multi-vector nature of the vulnerability increases attack surface and makes it more difficult to secure completely, as both the ulist and view_forum actions present separate entry points for malicious input. This type of vulnerability typically aligns with ATT&CK technique T1566.001 which covers the use of malicious web content to establish initial access or maintain persistence within target environments.
Mitigation strategies for CVE-2009-4697 require immediate implementation of proper input validation and output encoding measures across all user-controllable parameters. Organizations should implement strict parameter validation that rejects or sanitizes potentially malicious input before processing, while also applying context-appropriate output encoding to prevent script execution in web contexts. The recommended approach includes implementing Content Security Policy headers to limit script execution, using parameterized queries for database operations, and establishing comprehensive input sanitization routines. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components, as this represents a common pattern that appears in many legacy web applications. The remediation process should also include updating the RadNICS Gold 5 application to a patched version if available, or implementing web application firewalls as temporary protective measures while permanent fixes are deployed.