CVE-2025-9085 is a medium-severity SQL Injection vulnerability identified in the 'User Registration & Membership – Custom Registration Form Builder, Custom Login Form, User Profile, Content Restriction & Membership' WordPress plugin developed by wpeverest. The vulnerability arises from improper neutralization of special elements in SQL commands (CWE-89) due to insufficient escaping of the 's' parameter in version 4.3.0 and potentially all affected versions. This flaw allows authenticated users with administrator-level privileges or higher to inject additional SQL queries into existing database queries. Exploiting this vulnerability enables attackers to extract sensitive information from the underlying database without requiring user interaction. The CVSS 3.1 base score is 4.9, reflecting a medium severity level, with the vector indicating network attack vector, low attack complexity, high privileges required, no user interaction, unchanged scope, high confidentiality impact, and no impact on integrity or availability. No public exploits are currently known in the wild, and no patches have been linked yet. The vulnerability is significant because it leverages the elevated privileges of administrators to perform unauthorized data extraction, which could include user credentials, personal data, or other sensitive content stored in the WordPress database. Given that WordPress is widely used across many European organizations for websites and membership management, this vulnerability poses a risk especially where this plugin is installed and administrator accounts may be compromised or misused. The lack of sufficient input sanitization and parameterized queries in the plugin's codebase is the root cause, highlighting a need for secure coding practices in plugin development.

For European organizations, the impact of CVE-2025-9085 can be significant, particularly for those relying on WordPress sites with the vulnerable wpeverest plugin for user registration and membership management. Successful exploitation could lead to unauthorized disclosure of sensitive data such as user personal information, membership details, and potentially credentials stored in the database. This data leakage can result in privacy violations under GDPR, reputational damage, and potential legal liabilities. Since the vulnerability requires administrator-level access, the risk is amplified if an attacker gains or already has such privileges, possibly through phishing or credential compromise. The attack does not affect data integrity or availability directly but compromises confidentiality, which is critical for compliance and trust. Organizations in sectors like e-commerce, education, healthcare, and government using this plugin to manage user memberships are particularly vulnerable. Additionally, the medium CVSS score suggests that while exploitation is not trivial, the consequences of a successful attack are serious enough to warrant immediate attention. The absence of known exploits in the wild provides a window for mitigation before widespread attacks occur.

To mitigate CVE-2025-9085, European organizations should: 1) Immediately audit their WordPress installations to identify the presence of the wpeverest User Registration & Membership plugin, especially version 4.3.0 and earlier. 2) Restrict administrator-level access strictly to trusted personnel and enforce strong authentication mechanisms such as multi-factor authentication (MFA) to reduce the risk of privilege abuse. 3) Monitor administrative activities and database query logs for unusual or suspicious behavior indicative of SQL injection attempts. 4) Apply principle of least privilege by limiting the database permissions of the WordPress user account to only what is necessary, reducing the impact of injection. 5) Engage with the plugin vendor or community to obtain patches or updates addressing this vulnerability as soon as they become available. 6) If patches are not yet available, consider temporarily disabling or replacing the plugin with a secure alternative to prevent exploitation. 7) Conduct regular security assessments and penetration testing focusing on WordPress plugins and custom code to detect similar injection flaws. 8) Educate administrators on secure handling of credentials and the risks of elevated privileges. These steps go beyond generic advice by focusing on access control, monitoring, and proactive plugin management tailored to this specific vulnerability.