CVE-2025-8416 in Product Filter by WBW Plugin
Summary
by MITRE • 10/25/2025
The Product Filter by WBW plugin for WordPress is vulnerable to SQL Injection via the 'filtersDataBackend' parameter in all versions up to, and including, 2.9.7. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
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Analysis
by VulDB Data Team • 10/25/2025
The CVE-2025-8416 vulnerability affects the Product Filter by WBW WordPress plugin, representing a critical security flaw that exposes systems to unauthorized data access. This vulnerability exists within the plugin's handling of user-supplied input through the 'filtersDataBackend' parameter, which is processed without adequate sanitization or escaping mechanisms. The flaw impacts all versions up to and including 2.9.7, indicating a widespread issue that has remained unaddressed for an extended period. The vulnerability classification aligns with CWE-89 which specifically addresses SQL Injection flaws, where improper input validation allows attackers to manipulate database queries through malicious input.
The technical implementation of this vulnerability stems from the plugin's failure to properly prepare SQL queries before executing them against the database. When the 'filtersDataBackend' parameter is processed, the input undergoes insufficient escaping, allowing attackers to inject additional SQL commands that become part of the existing query structure. This lack of proper input sanitization creates a pathway for attackers to manipulate the intended query execution flow, effectively bypassing normal database access controls. The vulnerability's exploitation does not require authentication, making it particularly dangerous as any remote user can attempt to exploit the flaw without prior system access credentials.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with the capability to extract sensitive information from the WordPress database. This includes but is not limited to user credentials, personal information, plugin configurations, and potentially other database contents that may contain system architecture details or additional security weaknesses. The unauthenticated nature of the attack means that organizations running affected plugin versions are immediately at risk from external threat actors who may scan for vulnerable systems. The vulnerability's presence in a widely-used plugin increases the potential attack surface significantly, as numerous WordPress installations may be exposed to this threat vector.
Mitigation strategies for CVE-2025-8416 should prioritize immediate plugin version updates to the latest available release that contains the necessary security patches. Organizations should implement network-level protections including firewall rules that restrict access to plugin endpoints and consider implementing web application firewalls to detect and block malicious SQL injection attempts. Database access controls should be reviewed to ensure that the WordPress database user account has minimal required privileges, reducing the potential impact if exploitation occurs. Additionally, implementing input validation and output encoding mechanisms at the application level can provide defense-in-depth measures against similar vulnerabilities. The ATT&CK framework's T1190 technique for exploitation of remote services applies directly to this vulnerability, as it represents an unauthenticated remote code execution vector that can be leveraged to access sensitive data through SQL injection attacks. Regular security audits and vulnerability assessments should be conducted to identify and remediate similar weaknesses in other WordPress plugins and themes that may present similar attack vectors.