CVE-2006-6079 in LoudMouth
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in LoudMouth 2.4 allow remote attackers to execute arbitrary PHP code via a URL in the mainframe parameter to (1) admin.loudmouth.php or (2) toolbar.loudmouth.php.
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Analysis
by VulDB Data Team • 04/28/2026
The vulnerability identified as CVE-2006-6079 represents a critical remote file inclusion flaw affecting LoudMouth 2.4, a content management system that was widely deployed in web environments during that era. This vulnerability resides in the application's handling of user-supplied input within the mainframe parameter, which is processed through two distinct entry points: admin.loudmouth.php and toolbar.loudmouth.php. The flaw allows malicious actors to inject arbitrary URLs that are subsequently included and executed as PHP code on the target server, creating a pathway for remote code execution.
The technical exploitation of this vulnerability stems from improper input validation and sanitization within the LoudMouth application's parameter handling mechanisms. When the mainframe parameter receives a URL value, the system fails to properly validate or sanitize this input before incorporating it into the execution flow. This creates a classic remote file inclusion vulnerability, classified under CWE-88 as "Improper Neutralization of Argument Delimiters in a Command" and more specifically aligned with CWE-98 for "Inclusion of Code from Untrusted Source." The vulnerability exists because the application directly uses user-controllable input to determine which files to include, without sufficient validation to prevent malicious file inclusion attempts.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete control over the affected server. Once exploited, remote attackers can execute arbitrary PHP commands, potentially leading to full system compromise, data exfiltration, or the establishment of persistent backdoors. The vulnerability affects both administrative and toolbar functionalities, meaning that attackers could compromise either the administrative interface or the toolbar components, depending on which entry point they target. This dual attack surface increases the likelihood of successful exploitation and provides multiple vectors for attackers to achieve their objectives.
Security practitioners should recognize this vulnerability as part of the broader category of remote code execution flaws that have historically plagued web applications. The attack pattern aligns with techniques documented in the MITRE ATT&CK framework under the T1059.007 sub-technique for "Command and Scripting Interpreter: PHP" and T1190 for "Exploit Public-Facing Application." Organizations should implement immediate mitigations including input validation, parameter sanitization, and the removal of any functionality that allows dynamic file inclusion based on user input. The vulnerability demonstrates the critical importance of proper input validation and the principle of least privilege in web application security, as the flaw could be exploited to gain unauthorized access to sensitive system resources and data.