CVE-2006-5849 in IrayoBlog
Summary
by MITRE
PHP remote file inclusion vulnerability in inc/irayofuncs.php in IrayoBlog alpha-0.2.4 allows remote attackers to execute arbitrary PHP code via a URL in the irayodirhack parameter.
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Analysis
by VulDB Data Team • 04/27/2026
The vulnerability identified as CVE-2006-5849 represents a critical remote file inclusion flaw in the IrayoBlog alpha-0.2.4 content management system. This vulnerability exists within the inc/irayofuncs.php file where the application fails to properly validate user input before incorporating it into file inclusion operations. The specific parameter irayodirhack serves as the attack vector, allowing malicious actors to inject arbitrary URLs that the application subsequently attempts to include and execute as PHP code. This type of vulnerability falls under the category of CWE-88, which describes improper neutralization of special elements used in an OS command, and more specifically aligns with CWE-94, representing improper execution of code. The flaw demonstrates a classic insecure direct object reference pattern where user-controllable input directly influences file system operations without adequate sanitization or validation.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and potential data exfiltration. An attacker exploiting this vulnerability can inject malicious PHP payloads that execute with the privileges of the web server process, potentially leading to unauthorized access to sensitive data, system reconnaissance, and further lateral movement within the network infrastructure. The vulnerability's remote nature means that attackers do not require physical access to the system or prior authentication credentials to exploit the flaw. This weakness directly maps to ATT&CK technique T1190, which describes exploiting vulnerabilities in remote services, and T1059, representing execution of malicious code through command and scripting interpreters. The attack chain typically involves crafting a malicious URL containing the payload, sending it to the vulnerable application through the irayodirhack parameter, and then executing the injected code remotely without requiring additional authentication or system access.
Mitigation strategies for CVE-2006-5849 should focus on immediate input validation and sanitization of all user-controllable parameters. The most effective approach involves implementing strict parameter validation that rejects any input containing URL schemes or external references within the irayodirhack parameter. Organizations should also consider disabling remote file inclusion features entirely and implementing a whitelist-based approach for file operations. The remediation process should include updating the vulnerable application to a patched version or implementing proper input sanitization mechanisms that prevent the injection of external URLs into file inclusion operations. Additionally, network-based security controls such as web application firewalls should be configured to detect and block suspicious URL patterns that attempt to exploit this vulnerability. The implementation of proper access controls and privilege separation can further reduce the potential impact of successful exploitation attempts. Security monitoring should include detection of unusual file inclusion patterns and unauthorized code execution attempts that may indicate exploitation of this vulnerability.