CVE-2025-5954: WordPress Service Finder SMS Privilege Escalation

CVE-2025-5954 Overview

The Service Finder SMS System plugin for WordPress contains a critical privilege escalation vulnerability that allows unauthenticated attackers to register as administrator users. This vulnerability exists in all versions up to and including 2.0.0 due to improper user role restriction during the registration process through the aonesms_fn_savedata_after_signup() function.

Critical Impact

Unauthenticated attackers can gain full administrative access to WordPress installations by exploiting the unrestricted user role selection during registration, potentially leading to complete site compromise.

Affected Products

• Service Finder SMS System plugin for WordPress versions ≤ 2.0.0
• WordPress installations using the Service Finder theme ecosystem
• Sites utilizing the Service Finder Service and Business Listing WordPress theme

Discovery Timeline

• 2025-08-01 - CVE CVE-2025-5954 published to NVD
• 2025-08-04 - Last updated in NVD database

Technical Details for CVE-2025-5954

Vulnerability Analysis

This vulnerability is classified under CWE-269 (Improper Privilege Management) and represents a severe access control failure in the WordPress plugin architecture. The vulnerable function aonesms_fn_savedata_after_signup() processes user registration requests without adequately validating or restricting the role parameter submitted by the user. This design flaw allows any unauthenticated visitor to craft a registration request specifying an administrator role, effectively bypassing all intended access controls.

The attack requires no user interaction and can be executed remotely over the network with minimal complexity. Successful exploitation grants complete access to the WordPress administrative interface, enabling attackers to modify site content, install malicious plugins, access sensitive data, and potentially pivot to underlying server infrastructure.

Root Cause

The root cause of this vulnerability lies in the absence of proper input validation and role restriction within the aonesms_fn_savedata_after_signup() function. The plugin accepts user-supplied role parameters during the registration process without verifying that the requested role is appropriate for public registration. This violates the principle of least privilege by allowing users to self-assign privileged roles that should only be assignable by existing administrators.

Attack Vector

The attack vector is network-based and requires no authentication or user interaction. An attacker can submit a crafted HTTP POST request to the WordPress registration endpoint handled by the Service Finder SMS System plugin. By manipulating the user role parameter in the registration form data, the attacker specifies an administrative role assignment. The vulnerable function processes this request and creates a new user account with administrative privileges, providing the attacker with immediate access to the WordPress dashboard with full administrative capabilities.

The exploitation process involves identifying WordPress sites running the vulnerable plugin version, constructing a malicious registration request with an administrator role parameter, and submitting the request to gain privileged access. For detailed technical information, refer to the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-5954

Indicators of Compromise

• Unexpected administrator accounts appearing in the WordPress user database
• New user registrations with administrator privileges from unknown sources
• Unusual POST requests to registration endpoints containing role manipulation parameters
• Suspicious activity in WordPress audit logs related to user creation events

Detection Strategies

• Monitor WordPress user tables for newly created accounts with administrator or elevated privileges
• Implement web application firewall (WAF) rules to detect and block registration requests containing privileged role parameters
• Review server access logs for POST requests to Service Finder SMS System registration handlers
• Deploy endpoint detection solutions to identify unauthorized administrative actions following account creation

Monitoring Recommendations

• Enable detailed WordPress audit logging to capture all user registration events with role assignments
• Configure alerts for any new administrator account creation events
• Implement real-time monitoring of wp_users and wp_usermeta database tables for privilege changes
• Establish baseline user registration patterns to detect anomalous administrator account creation

How to Mitigate CVE-2025-5954

Immediate Actions Required

• Audit all WordPress user accounts and remove any unauthorized administrator accounts
• Temporarily disable the Service Finder SMS System plugin until a patched version is available
• Implement web application firewall rules to block malicious registration requests
• Review WordPress access logs for evidence of exploitation attempts

Patch Information

As of the last update on 2025-08-04, site administrators should check for updates to the Service Finder SMS System plugin. Visit the ThemeForest product page for the latest version information and security updates. Monitor the Wordfence vulnerability database for patch status updates.

Workarounds

• Disable the Service Finder SMS System plugin registration functionality until a patch is released
• Implement server-side access controls to restrict registration endpoint access
• Add custom code validation to filter role parameters in registration requests
• Consider using a security plugin to enforce role restrictions on user registration

# Configuration example: Disable plugin via wp-cli until patched
wp plugin deactivate service-finder-sms-system --path=/var/www/wordpress

# Review existing admin accounts
wp user list --role=administrator --fields=ID,user_login,user_email,user_registered --path=/var/www/wordpress

# Add .htaccess rule to block direct access to registration handler (Apache)
# Add to WordPress root .htaccess
# <FilesMatch "aonesms.*\.php$">
#   Order Deny,Allow
#   Deny from all
# </FilesMatch>