CVE-2025-22655: CWD Stealth Links SQL Injection Flaw

CVE-2025-22655 Overview

CVE-2025-22655 is a critical SQL Injection vulnerability affecting the CWD – Stealth Links WordPress plugin developed by Caio Web Dev. This vulnerability arises from improper neutralization of special elements used in SQL commands, allowing attackers to inject malicious SQL queries through the plugin's input handling mechanisms. Successful exploitation could enable unauthorized database access, data exfiltration, and potential compromise of the underlying WordPress installation.

Critical Impact

This SQL Injection vulnerability allows unauthenticated attackers to manipulate database queries, potentially exposing sensitive user data, credentials, and enabling full database compromise.

Affected Products

• CWD – Stealth Links plugin versions from n/a through 1.3
• WordPress installations running vulnerable versions of the CWD – Stealth Links plugin

Discovery Timeline

• 2025-04-17 - CVE-2025-22655 published to NVD
• 2025-04-17 - Last updated in NVD database

Technical Details for CVE-2025-22655

Vulnerability Analysis

This vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). The CWD – Stealth Links plugin fails to properly sanitize user-supplied input before incorporating it into SQL queries. This lack of input validation allows attackers to inject arbitrary SQL commands that are then executed by the database server with the privileges of the WordPress database user.

The vulnerability is particularly dangerous as it can be exploited remotely over the network without requiring any authentication or user interaction. The scope of the vulnerability extends beyond the vulnerable component, meaning a successful attack could potentially impact resources beyond the immediate plugin context, including other WordPress tables and sensitive user data.

Root Cause

The root cause of this vulnerability lies in the improper handling of user input within the CWD – Stealth Links plugin. The plugin fails to implement proper input sanitization and parameterized queries when constructing SQL statements. Instead of using prepared statements or WordPress's built-in database escaping functions like $wpdb->prepare(), the plugin directly concatenates user input into SQL queries, creating a classic SQL Injection attack surface.

Attack Vector

The attack vector for CVE-2025-22655 is network-based, requiring no authentication and no user interaction. An attacker can craft malicious HTTP requests containing SQL injection payloads targeting the vulnerable plugin functionality. The injection allows for high confidentiality impact through data extraction, and could also result in limited availability impact through database manipulation or denial of service conditions.

Typical exploitation involves injecting SQL syntax into vulnerable parameters to extract database contents using UNION-based queries, manipulate data through UPDATE/DELETE statements, or enumerate database structure and user credentials.

Detection Methods for CVE-2025-22655

Indicators of Compromise

• Unusual SQL error messages appearing in WordPress logs or web server error logs
• Database query logs showing unexpected UNION SELECT, ORDER BY, or other SQL injection patterns
• Access logs containing encoded SQL syntax characters (e.g., %27, %22, --, /**/)
• Unexpected database modifications or new administrative user accounts
• Web application firewall alerts for SQL injection patterns targeting WordPress plugins

Detection Strategies

• Deploy web application firewall (WAF) rules specifically targeting SQL injection patterns in WordPress plugin endpoints
• Enable and monitor WordPress debug logging for SQL-related errors or exceptions
• Implement database query logging and alert on anomalous query patterns
• Use intrusion detection systems (IDS) with WordPress-specific rulesets to identify exploitation attempts

Monitoring Recommendations

• Monitor web server access logs for requests containing SQL injection payloads targeting the CWD – Stealth Links plugin
• Enable database auditing to track all queries executed against WordPress tables
• Set up alerts for failed login attempts or new user account creation following suspicious web activity
• Review WordPress user tables periodically for unauthorized administrative accounts

How to Mitigate CVE-2025-22655

Immediate Actions Required

• Immediately disable or deactivate the CWD – Stealth Links plugin until a patched version is available
• Implement web application firewall rules to block SQL injection attempts
• Review database logs and user tables for signs of compromise
• Audit WordPress user accounts and remove any unauthorized administrative users
• Change database credentials if exploitation is suspected

Patch Information

At the time of publication, organizations should monitor the Patchstack SQL Injection Analysis for updates regarding vendor patches. Users should check the WordPress plugin repository and vendor communications for security updates to versions beyond 1.3.

Workarounds

• Completely disable the CWD – Stealth Links plugin until an official patch is released
• Implement strict WAF rules to filter SQL injection patterns in requests to WordPress
• Use WordPress security plugins that provide virtual patching capabilities for known vulnerabilities
• Restrict database user privileges to minimize impact if exploitation occurs
• Consider alternative WordPress plugins with similar functionality that have better security track records

# WordPress CLI command to deactivate the vulnerable plugin
wp plugin deactivate cwd-stealth-links

# Verify plugin is deactivated
wp plugin list --status=active | grep stealth

# Optional: Remove the plugin entirely until patched
wp plugin delete cwd-stealth-links