CVE-2025-10683 identifies a SQL Injection vulnerability in the Easy Email Subscription plugin for WordPress, maintained by yudiz. This vulnerability exists in all versions up to and including 1.3 due to improper neutralization of special characters in the 'uid' parameter used in SQL queries. Specifically, the plugin fails to sufficiently escape or prepare the 'uid' parameter, allowing an authenticated attacker with Administrator-level privileges or higher to append arbitrary SQL commands to existing queries. This can enable extraction of sensitive information from the underlying database, such as user data or configuration details. The vulnerability does not affect data integrity or availability, as it is limited to read-only data disclosure. The CVSS v3.1 score is 4.9 (medium), reflecting the requirement for high privileges (PR:H), network attack vector (AV:N), no user interaction (UI:N), and impact limited to confidentiality (C:H, I:N, A:N). No public exploits have been reported to date, but the vulnerability poses a risk in environments where admin credentials are compromised or misused. The plugin is widely used in WordPress deployments, particularly among small and medium enterprises that rely on email subscription management. The lack of a patch link indicates that a fix may not yet be available, emphasizing the need for interim mitigations.

For European organizations, this vulnerability could lead to unauthorized disclosure of sensitive subscriber or user data stored within the WordPress database, potentially violating GDPR and other data protection regulations. The impact is primarily on confidentiality, risking exposure of personal data or business-sensitive information. Since exploitation requires administrator-level access, the threat is heightened in environments with weak internal access controls or where admin credentials may be phished or leaked. The vulnerability does not allow modification or deletion of data, nor does it cause service disruption, so operational impact is limited. However, data breaches resulting from this vulnerability could lead to reputational damage, regulatory fines, and loss of customer trust. Organizations relying on the Easy Email Subscription plugin for marketing or customer engagement should consider the risk of data leakage and prioritize remediation. The medium severity rating suggests a moderate urgency but should not be ignored given the sensitivity of email subscriber data.

European organizations should immediately audit and restrict administrator access to trusted personnel only, employing strong authentication mechanisms such as multi-factor authentication (MFA). Monitoring and logging database queries related to the 'uid' parameter can help detect suspicious activity indicative of exploitation attempts. Until an official patch is released, consider disabling or replacing the Easy Email Subscription plugin with a secure alternative. If disabling is not feasible, implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns targeting the 'uid' parameter. Regularly update WordPress core and plugins to minimize exposure to known vulnerabilities. Conduct internal security training to reduce the risk of credential compromise. Additionally, review database permissions to ensure that WordPress database users have the least privileges necessary, limiting the potential impact of SQL injection. Finally, prepare incident response plans to quickly address any detected exploitation attempts.