CVE-2025-9217: Slider Revolution Path Traversal Flaw

CVE-2025-9217 Overview

The Slider Revolution plugin for WordPress contains a Path Traversal vulnerability affecting all versions up to and including 6.7.36. The vulnerability exists in the used_svg and used_images parameters, allowing authenticated attackers with Contributor-level access or higher to read arbitrary files from the server. This can expose sensitive configuration data, credentials, and other protected information stored on the vulnerable WordPress installation.

Critical Impact

Authenticated attackers can leverage this vulnerability to read sensitive server files including WordPress configuration files containing database credentials, API keys, and other critical secrets.

Affected Products

• Slider Revolution WordPress plugin versions up to and including 6.7.36

Discovery Timeline

• 2025-08-29 - CVE-2025-9217 published to NVD
• 2025-08-29 - Last updated in NVD database

Technical Details for CVE-2025-9217

Vulnerability Analysis

This Path Traversal vulnerability (CWE-22) enables authenticated users to escape the intended directory structure and access files outside the web application's root directory. The vulnerability requires only Contributor-level access, which is a relatively low privilege level in WordPress installations, making it accessible to a broader range of potential attackers within a multi-user WordPress environment.

The attack surface is network-accessible, requiring no user interaction to exploit. While the vulnerability does not allow modification or deletion of files, the ability to read arbitrary files poses significant confidentiality risks, particularly in shared hosting environments or installations containing sensitive data.

Root Cause

The root cause lies in insufficient input validation and sanitization of the used_svg and used_images parameters within the Slider Revolution plugin. These parameters fail to properly validate user-supplied path values, allowing directory traversal sequences (such as ../) to be processed. This enables attackers to construct file paths that reference locations outside the intended upload or asset directories.

Attack Vector

The attack is conducted over the network by an authenticated user with at least Contributor privileges. The attacker manipulates the used_svg or used_images parameters to include directory traversal sequences, causing the application to read files from arbitrary locations on the server's filesystem. Common targets include the WordPress wp-config.php file, which contains database credentials and authentication keys, as well as /etc/passwd on Linux systems or other configuration files that may reveal sensitive system information.

The vulnerability does not require user interaction and can be exploited with low attack complexity. While it does not impact system integrity or availability directly, the confidentiality impact is significant due to the potential exposure of sensitive configuration data.

Detection Methods for CVE-2025-9217

Indicators of Compromise

• Review web server access logs for requests to Slider Revolution endpoints containing directory traversal sequences (../, ..%2f, %2e%2e/)
• Monitor for unusual file access patterns, particularly requests attempting to access files outside the WordPress installation directory
• Check for attempts to access sensitive files like wp-config.php, /etc/passwd, or .htaccess through plugin parameters

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block path traversal patterns in request parameters
• Deploy file integrity monitoring to detect unauthorized access attempts to sensitive configuration files
• Configure intrusion detection systems to alert on directory traversal sequences in HTTP requests targeting WordPress plugin endpoints

Monitoring Recommendations

• Enable detailed logging for WordPress plugin activity and monitor for anomalous request patterns
• Set up alerts for access attempts to Slider Revolution endpoints with suspicious parameter values
• Monitor authentication logs for Contributor-level accounts exhibiting unusual behavior or automated request patterns

How to Mitigate CVE-2025-9217

Immediate Actions Required

• Update the Slider Revolution plugin to version 6.7.37 or later immediately
• Audit Contributor-level and above user accounts to identify any potentially compromised or unauthorized accounts
• Review server access logs for evidence of exploitation attempts
• Consider temporarily disabling the Slider Revolution plugin if immediate patching is not possible

Patch Information

The vendor has released version 6.7.37 which addresses this vulnerability. Administrators should update through the WordPress dashboard or by downloading the latest version directly from the vendor. Detailed changelog information is available in the Slider Revolution Changelog. Additional vulnerability analysis and remediation guidance can be found in the Wordfence Vulnerability Analysis.

Workarounds

• Restrict Contributor-level access to trusted users only until the plugin can be updated
• Implement server-level path traversal filtering using .htaccess rules or web server configuration
• Deploy a Web Application Firewall with rules to block directory traversal attempts targeting WordPress plugins
• Consider using file system permissions to restrict PHP's ability to read files outside the WordPress installation directory

# Example .htaccess rule to block directory traversal attempts
RewriteEngine On
RewriteCond %{QUERY_STRING} (\.\./|\.\.%2f) [NC,OR]
RewriteCond %{QUERY_STRING} (used_svg|used_images)=.*\.\. [NC]
RewriteRule .* - [F,L]