CVE-2006-5326 in French Language Pack
Summary
by MITRE
PHP remote file inclusion vulnerability in language/lang/lang_contact_faq.php in the Prillian French 0.8.0 and earlier module for phpBB allows remote attackers to execute arbitrary PHP code via a URL in the phpbb_root_path parameter. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
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Analysis
by VulDB Data Team • 04/24/2026
This vulnerability represents a critical remote file inclusion flaw that affects the Prillian French 0.8.0 and earlier module for phpBB platforms. The issue resides within the language/lang/lang_contact_faq.php file where improper input validation allows attackers to inject malicious URLs through the phpbb_root_path parameter. This type of vulnerability falls under the category of insecure direct object references and represents a classic remote code execution vector that has been documented in various security frameworks including CWE-88 and CWE-94. The flaw enables attackers to manipulate the application's behavior by injecting external URLs that get included and executed as PHP code, effectively bypassing normal security boundaries.
The technical exploitation of this vulnerability requires an attacker to craft a malicious URL that gets passed through the phpbb_root_path parameter, which then gets processed by the vulnerable include statement in the lang_contact_faq.php file. This creates a pathway for arbitrary code execution on the target server, as the application fails to properly validate or sanitize user input before using it in file inclusion operations. The vulnerability demonstrates poor input sanitization practices and highlights the importance of proper parameter validation in web applications. According to ATT&CK framework, this maps to technique T1059.001 for command and scripting interpreter and T1190 for exploitation of remote services.
The operational impact of this vulnerability is severe as it allows remote attackers to execute arbitrary code on vulnerable systems without requiring authentication or prior access. Once exploited, attackers can gain full control over the affected server, potentially leading to data breaches, system compromise, or further lateral movement within networks. The vulnerability affects not just individual installations but entire phpBB communities that use the affected Prillian French module, making it a widespread concern for administrators and security professionals. The lack of authenticated access requirements makes this particularly dangerous in public-facing web applications where such vulnerabilities can be exploited by anyone with internet access.
Mitigation strategies for this vulnerability include immediate patching of the affected Prillian French module to version 0.8.1 or later, which should contain fixes for the input validation issues. System administrators should also implement proper input validation and sanitization measures, including the use of allow_url_include and allow_url_fopen directives set to off in php.ini configurations. Additional protective measures include implementing web application firewalls, conducting regular security audits, and ensuring that all third-party modules are regularly updated and vetted for security issues. Organizations should also consider implementing network segmentation and monitoring to detect suspicious file inclusion activities. The vulnerability serves as a reminder of the critical importance of secure coding practices and proper input validation in preventing remote code execution attacks that can compromise entire systems.