CVE-2026-71571 in Extension
Summary
by MITRE • 08/14/2026
Joomla Extension - icagenda.com - Authenticated SQL injection via unescaped numeric filter in iCagenda < 2.0.0-4.0.11 - Backend operators with permissions to access iCagenda could inject SQL.
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Analysis
by VulDB Data Team • 08/15/2026
This vulnerability affects the Joomla extension icagenda.com which is used for event management and calendar functionality within Joomla content management systems. The issue stems from an authenticated sql injection flaw in versions prior to 2.0.0-4.0.11 where backend operators with appropriate permissions can exploit a numeric filter that fails to properly escape user input. The vulnerability occurs when the application processes numeric filter parameters without adequate sanitization, allowing malicious actors to inject arbitrary sql commands into the database query execution flow.
The technical flaw manifests in how the iCagenda component handles numeric input parameters within its backend administrative interface. When operators with sufficient privileges access certain management functions, the application fails to properly escape or validate numeric filter values before incorporating them into sql queries. This creates an authenticated sql injection vector that enables attackers to manipulate database operations and potentially extract sensitive information from the underlying mysql database. The vulnerability is specifically categorized as a CWE-89 - Improper Neutralization of Special Elements used in an SQL Command, which represents one of the most critical sql injection attack patterns.
The operational impact of this vulnerability extends beyond simple data theft as it allows authenticated attackers to escalate their privileges within the application context. Backend operators with access to iCagenda management functions can leverage this flaw to execute arbitrary database commands including but not limited to data extraction, modification, or deletion. Attackers could potentially gain access to user credentials, event information, and other sensitive data stored within the integrated database system. The vulnerability particularly affects organizations relying on joomla for their web presence where iCagenda is deployed as a calendar management solution.
Mitigation strategies should include immediate patching of all affected versions to 2.0.0-4.0.11 or later releases that contain proper input validation and sanitization measures. Organizations should also implement network segmentation to limit access to backend administrative interfaces and enforce principle of least privilege for iCagenda operators. Database query logging and monitoring should be enabled to detect suspicious sql patterns, while regular security audits of joomla extensions can help identify similar vulnerabilities in other components. The attack pattern aligns with ATT&CK technique T1071.004 - Application Layer Protocol: DNS, where attackers may use sql injection to establish persistent access or extract data from database systems. Additionally implementing web application firewalls and input validation at multiple layers provides defense in depth against similar exploitation vectors. Regular security updates and vulnerability assessments remain essential for maintaining robust protection against authenticated sql injection attacks targeting content management system extensions.