CVE-2010-4795 in Com Jscalendar
Summary
by MITRE
SQL injection vulnerability in the JS Calendar (com_jscalendar) component 1.5.1 and 1.5.4 for Joomla! allows remote attackers to execute arbitrary SQL commands via the ev_id parameter in a details action to index.php. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 08/10/2025
The CVE-2010-4795 vulnerability represents a critical SQL injection flaw within the JS Calendar component version 1.5.1 and 1.5.4 of the Joomla! content management system. This vulnerability specifically affects the component's handling of user input through the ev_id parameter in the details action of the index.php script, creating a pathway for remote attackers to execute malicious SQL commands against the underlying database. The flaw stems from insufficient input validation and improper parameter sanitization within the component's code structure, allowing attackers to manipulate database queries through crafted malicious input.
The technical exploitation of this vulnerability occurs when an attacker submits a specially crafted ev_id parameter value that bypasses normal input validation mechanisms. The JS Calendar component fails to properly escape or sanitize user-supplied data before incorporating it into SQL query strings, enabling attackers to inject malicious SQL syntax that gets executed by the database engine. This type of vulnerability falls under CWE-89, which specifically addresses SQL injection vulnerabilities in software applications. The attack vector is particularly dangerous because it allows remote code execution without requiring authentication, as the vulnerability exists in a publicly accessible web application component.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with the ability to manipulate, modify, or delete database content with full administrative privileges. Successful exploitation could result in complete database compromise, leading to unauthorized access to sensitive user information, session data, and potentially allowing attackers to escalate their privileges within the Joomla installations. This type of attack aligns with ATT&CK technique T1071.004, which describes the use of application layer protocol commands and queries for exploitation purposes.
Mitigation strategies for CVE-2010-4795 should prioritize immediate patching of the affected JS Calendar component to the latest secure version that addresses the SQL injection vulnerability. Organizations should implement proper input validation and parameter sanitization measures throughout their web applications, ensuring that all user-supplied data undergoes rigorous validation before being processed by database queries. Additionally, implementing web application firewalls and database query monitoring systems can provide additional layers of protection against similar vulnerabilities. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues within the Joomla! ecosystem, as this vulnerability demonstrates the importance of proper input handling and parameter validation in preventing database compromise attacks.