CVE-2006-2188 in CMScout
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in CMScout 1.10 and earlier allow remote attackers to inject arbitrary web script or HTML via (1) the Body field of a private message (PM), (2) BBCode, or (3) a forum post.
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Analysis
by VulDB Data Team • 03/15/2025
The vulnerability identified as CVE-2006-2188 represents a critical cross-site scripting weakness affecting CMScout version 1.10 and earlier systems. This vulnerability resides within the web application's input validation mechanisms, specifically targeting three distinct data entry points that process user-generated content. The flaw enables malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers, creating a significant security risk for the entire user base of affected installations.
The technical implementation of this vulnerability stems from inadequate sanitization of user input across multiple communication channels within the CMScout platform. Attackers can exploit this weakness by crafting malicious payloads in three specific areas: private message bodies where users can enter content in the Body field, BBCode formatting elements that allow rich text rendering, and forum post content areas where users submit their contributions. These input vectors represent common attack surfaces in web applications where user-generated content is processed and displayed without proper security controls.
The operational impact of CVE-2006-2188 extends beyond simple script execution, as it can enable sophisticated attack chains that compromise user sessions and potentially lead to account takeover scenarios. When exploited, these XSS vulnerabilities allow attackers to inject malicious scripts that can steal session cookies, redirect users to phishing sites, or modify content displayed to other users. The vulnerability's classification aligns with CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, and the attack patterns correspond to those documented in the MITRE ATT&CK framework under the T1059.007 technique for Command and Scripting Interpreter. The attack surface is particularly concerning given that CMScout is a content management system that likely handles sensitive user communications and forum discussions.
Mitigation strategies for this vulnerability require immediate implementation of robust input sanitization and output encoding mechanisms throughout the affected application. The most effective remediation involves implementing comprehensive HTML entity encoding for all user-supplied content before rendering it on web pages, combined with strict validation of input parameters against known safe character sets. Additionally, developers should implement Content Security Policy headers to limit script execution capabilities and establish proper sanitization routines for BBCode and other markup languages. The vulnerability demonstrates the critical importance of input validation in web applications and serves as a reminder of the necessity for regular security assessments and vulnerability management processes that can identify and remediate such flaws before they can be exploited by malicious actors in the wild. Organizations using CMScout should immediately upgrade to version 1.11 or later where this vulnerability has been addressed through proper input validation and sanitization controls.