CVE-2006-5705 in WordPress
Summary
by MITRE
Multiple directory traversal vulnerabilities in plugins/wp-db-backup.php in WordPress before 2.0.5 allow remote authenticated users to read or overwrite arbitrary files via directory traversal sequences in the (1) backup and (2) fragment parameters in a GET request.
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Analysis
by VulDB Data Team • 04/26/2026
The vulnerability identified as CVE-2006-5705 represents a critical directory traversal flaw within the WordPress content management system that existed prior to version 2.0.5. This security weakness specifically affects the plugins/wp-db-backup.php component and enables authenticated attackers to exploit the system through carefully crafted GET requests containing directory traversal sequences. The vulnerability manifests in two distinct parameter contexts where the backup and fragment parameters become vectors for malicious file access. The flaw stems from inadequate input validation and sanitization within the backup plugin functionality, allowing attackers to manipulate file paths and gain unauthorized access to the underlying file system.
This directory traversal vulnerability operates at the core of web application security principles and aligns with CWE-22, which categorizes improper limitation of a pathname to a restricted directory. The attack vector specifically targets the wp-db-backup.php plugin implementation where user-supplied parameters are directly incorporated into file system operations without proper sanitization. The authenticated nature of this vulnerability means that attackers must first obtain valid user credentials, though once authenticated, they can leverage this flaw to read arbitrary files on the server or potentially overwrite critical system files. The implications extend beyond simple data theft as attackers could potentially execute malicious code or compromise the entire WordPress installation through file manipulation.
The operational impact of CVE-2006-5705 is significant for WordPress installations running vulnerable versions, as it provides attackers with the capability to access sensitive database backup files, configuration settings, and potentially other critical system files. This vulnerability enables attackers to bypass normal access controls and directly interact with the file system through the WordPress interface. The consequences can range from data exfiltration and system reconnaissance to complete system compromise depending on the permissions of the authenticated user account. Organizations running affected WordPress versions face heightened risk of data breaches, as the vulnerability allows for unauthorized file system access that could expose database credentials, plugin configurations, or other sensitive information.
Mitigation strategies for CVE-2006-5705 primarily involve upgrading to WordPress version 2.0.5 or later where the vulnerability has been addressed through proper input validation and sanitization of user parameters. System administrators should implement comprehensive patch management processes to ensure all WordPress components remain current with security updates. Additional protective measures include restricting file permissions for sensitive directories, implementing web application firewalls to detect and block directory traversal attempts, and conducting regular security audits of WordPress plugins and themes. The vulnerability also underscores the importance of following secure coding practices such as input validation, output encoding, and least privilege principles as outlined in the OWASP Top Ten and NIST cybersecurity guidelines. Organizations should also consider implementing monitoring solutions to detect unusual file access patterns that might indicate exploitation attempts.