CVE-2025-9950 is a directory traversal vulnerability classified under CWE-22 found in the Error Log Viewer plugin by BestWebSoft for WordPress. The vulnerability exists in the rrrlgvwr_get_file function, which improperly restricts pathname input, allowing an attacker with Administrator-level access to traverse directories and read arbitrary files on the server. This flaw affects all plugin versions up to and including 1.1.6. Because the vulnerability requires administrative privileges, exploitation is limited to users who already have significant control over the WordPress environment. The vulnerability can lead to unauthorized disclosure of sensitive information such as configuration files, credentials, or other critical data stored on the server. The CVSS 3.1 base score is 4.9, reflecting network attack vector, low attack complexity, high privileges required, no user interaction, and high confidentiality impact but no impact on integrity or availability. No public patches or known exploits have been reported yet. The vulnerability highlights the importance of secure input validation and path sanitization in web applications, especially plugins that handle file operations. Organizations using this plugin should monitor for updates from BestWebSoft and consider restricting administrative access or disabling the plugin until a fix is available.

The primary impact of CVE-2025-9950 is the unauthorized disclosure of sensitive server files, which can compromise confidentiality. Attackers with administrative access can read arbitrary files, potentially exposing database credentials, private keys, or other sensitive information that could facilitate further attacks or data breaches. Although the vulnerability does not affect integrity or availability directly, the leaked information could be leveraged to escalate privileges or pivot within the network. This risk is particularly significant for organizations relying on WordPress sites with the affected plugin installed, especially those hosting sensitive or regulated data. The requirement for administrator-level access limits the threat to insiders or attackers who have already compromised an administrative account, but it still represents a serious risk if such accounts are compromised. The absence of known exploits in the wild reduces immediate risk but does not eliminate the potential for future exploitation. Overall, the vulnerability could lead to data breaches, regulatory non-compliance, and reputational damage.

1. Immediately update the Error Log Viewer plugin to a patched version once released by BestWebSoft. 2. Until a patch is available, restrict administrative access to trusted personnel only and enforce strong authentication mechanisms such as multi-factor authentication (MFA). 3. Disable or uninstall the Error Log Viewer plugin if it is not essential to reduce the attack surface. 4. Implement strict file system permissions on the server to limit the files accessible by the web server user, minimizing the impact of arbitrary file reads. 5. Monitor WordPress logs and server access logs for unusual file access patterns or attempts to exploit path traversal. 6. Conduct regular audits of user privileges to ensure only necessary users have administrator-level access. 7. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests targeting the vulnerable function. 8. Educate administrators about the risks of privilege misuse and the importance of securing administrative credentials. These measures collectively reduce the risk of exploitation and limit potential damage.