CVE-2007-4244 in J Reactions
Summary
by MITRE
PHP remote file inclusion vulnerability in langset.php in J! Reactions (com_jreactions) 1.8.1 and earlier, a Joomla! component, allows remote attackers to execute arbitrary PHP code via a URL in the comPath parameter.
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Analysis
by VulDB Data Team • 09/15/2025
The vulnerability identified as CVE-2007-4244 represents a critical remote file inclusion flaw within the J platforms. This security weakness exists in versions 1.8.1 and earlier, specifically affecting the langset.php script which handles language settings for the component. The vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately filter user-supplied data before using it in file inclusion operations.
The technical exploitation of this vulnerability occurs through manipulation of the comPath parameter which is processed by the langset.php script. When an attacker supplies a malicious URL as the value for this parameter, the application fails to validate or sanitize the input before incorporating it into a file inclusion directive. This creates an opportunity for remote code execution since the application treats the supplied URL as a legitimate file path and attempts to include and execute the contents of the remote resource. The flaw directly maps to CWE-88, which describes improper neutralization of special elements used in an expression, specifically in the context of command and control operations. This vulnerability aligns with ATT&CK technique T1190, which covers exploiting vulnerabilities in remote services, and T1059, which involves executing malicious code through command injection.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. Attackers can leverage this flaw to upload and execute arbitrary PHP code on the affected Joomla Reactions face significant risk of data breaches, service disruption, and potential regulatory compliance violations due to the severity of the exploit.
Mitigation strategies for CVE-2007-4244 require immediate action to address the root cause through proper input validation and sanitization. The most effective approach involves updating to J environments.