CVE-2008-5164 in The Rat CMS
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in The Rat CMS Pre-Alpha 2 allow remote attackers to inject arbitrary web script or HTML via the (1) id parameter to (a) viewarticle.php and (b) viewarticle2.php and the (2) PATH_INFO to viewarticle.php.
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Analysis
by VulDB Data Team • 10/24/2025
The vulnerability identified as CVE-2008-5164 represents a critical cross-site scripting weakness in The Rat CMS Pre-Alpha 2 content management system. This flaw exists within the application's handling of user input parameters, specifically targeting two distinct entry points that process article viewing functionality. The vulnerability affects both viewarticle.php and viewarticle2.php scripts, making it particularly dangerous as it provides multiple attack vectors for malicious actors seeking to exploit the system.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the CMS's article viewing mechanisms. Attackers can manipulate the id parameter in viewarticle.php and viewarticle2.php to inject malicious scripts that will execute in the context of other users' browsers. Additionally, the vulnerability extends to the PATH_INFO handling in viewarticle.php, which means that even URL structure manipulation can be exploited to deliver malicious payloads. This dual attack surface significantly increases the exploitability of the vulnerability and reduces the effectiveness of simple input filtering measures.
The operational impact of this vulnerability is severe as it allows remote attackers to execute arbitrary web scripts or HTML code within the browser context of authenticated users. This capability enables attackers to perform session hijacking, steal sensitive information, deface the website, or redirect users to malicious sites. The pre-alpha version of The Rat CMS suggests this was likely an early development release that had not undergone comprehensive security testing, making it particularly susceptible to such fundamental flaws that would typically be caught during security audits of production systems. The vulnerability directly maps to CWE-79, which defines Cross-Site Scripting as a weakness where applications fail to properly encode output or validate input, allowing malicious scripts to be executed in user browsers.
The attack surface expands significantly when considering that this vulnerability affects multiple files within the CMS, increasing the likelihood of successful exploitation regardless of which specific article viewing function is targeted. The PATH_INFO exploitation vector adds complexity to mitigation efforts as it requires careful handling of all URL parsing mechanisms rather than simply filtering specific parameter names. Security professionals should consider this vulnerability in relation to ATT&CK technique T1566, which encompasses social engineering and malicious file delivery methods that can leverage XSS vulnerabilities for initial access or privilege escalation. Organizations using The Rat CMS Pre-Alpha 2 should immediately implement input sanitization measures, parameter validation, and output encoding to prevent malicious script injection. The vulnerability highlights the critical importance of security testing during development phases and proper implementation of secure coding practices, particularly in web applications that process user input through multiple entry points.