CVE-2010-4928 in Com Restaurantguide
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Restaurant Guide (com_restaurantguide) component 1.0.0 for Joomla! allows remote attackers to inject arbitrary web script or HTML by placing it after a > (greater than) character.
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Analysis
by VulDB Data Team • 08/26/2025
The vulnerability identified as CVE-2010-4928 represents a classic cross-site scripting flaw within the Restaurant Guide component version 1.0.0 for Joomla! platforms. This security weakness specifically manifests when the application fails to properly sanitize user input that contains HTML markup, creating an avenue for malicious actors to execute arbitrary scripts in the context of other users' browsers. The vulnerability occurs in the component's handling of data that is processed and displayed on web pages, making it particularly dangerous as it can affect any user who views content processed through the vulnerable component.
The technical exploitation of this vulnerability occurs when an attacker places malicious script content immediately after a greater than character within input fields or parameters that are subsequently rendered in web pages. This particular attack vector leverages the fact that the component does not adequately filter or escape HTML characters before displaying user-supplied content, allowing attackers to inject script tags or other malicious code that executes when other users browse pages containing the compromised data. The vulnerability is classified as a stored XSS issue since the malicious content is stored within the application's database or storage mechanisms and executed each time the affected page is accessed.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, defacement of web content, and redirection to malicious sites. When an attacker successfully exploits this vulnerability, they can potentially gain access to user sessions, steal sensitive information, or manipulate the displayed content to mislead users or compromise their systems. The vulnerability affects all users of the Joomla! platform who have the affected Restaurant Guide component installed, making it particularly concerning for websites that process user-generated content or maintain public directories of restaurants. This issue represents a critical security gap that violates the principle of least privilege and proper input validation.
Security practitioners should implement multiple layers of defense to address this vulnerability, beginning with immediate patching of the affected component to the latest secure version that contains proper input sanitization. The fix should include comprehensive HTML escaping of all user-supplied content before rendering, implementing Content Security Policies to restrict script execution, and conducting thorough input validation to prevent malicious content from being stored in the database. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while regularly monitoring their systems for signs of exploitation attempts. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a typical attack pattern categorized under ATT&CK technique T1059.007 for script injection, emphasizing the importance of proper input sanitization and output encoding in web application security architectures.