CVE-2026-25015 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the UsersWP plugin developed by Stiofan, affecting all versions up to 1.2.53. CSRF vulnerabilities occur when an attacker tricks an authenticated user into submitting a forged request to a web application, causing the application to perform unwanted actions on behalf of the user without their knowledge or consent. In this case, the UsersWP plugin, which manages user profiles and related functionalities within WordPress sites, does not adequately verify the origin or intent of requests that modify user data or settings. This lack of proper anti-CSRF protections means that if a user with sufficient privileges (such as an administrator or a logged-in user) visits a malicious website or clicks on a crafted link, the attacker can execute actions like changing user details, modifying permissions, or other state-changing operations within the plugin. Although no exploits have been reported in the wild, the vulnerability is publicly disclosed and can be exploited if an attacker can lure authenticated users to malicious sites. The absence of a CVSS score suggests the need for an independent severity assessment. The vulnerability primarily threatens the integrity of user data and the availability of user management functions, as unauthorized changes could disrupt normal operations or compromise user accounts. Exploitation requires the victim to be authenticated and to interact with a malicious site, but no additional authentication bypass is needed. The scope is limited to sites using the affected plugin versions, but given the popularity of WordPress and user management plugins, the potential impact is non-trivial.

For European organizations, this CSRF vulnerability poses a risk to the integrity and availability of user management functions on WordPress sites utilizing the UsersWP plugin. Unauthorized changes to user profiles or permissions could lead to privilege escalation, unauthorized access, or disruption of services relying on user data. Organizations operating community platforms, membership sites, or e-commerce portals with user accounts are particularly vulnerable. The exploitation could result in data integrity issues, loss of user trust, and potential compliance violations under GDPR if personal data is manipulated or exposed. While the vulnerability does not directly expose confidential data, the indirect effects of unauthorized actions could lead to broader security incidents. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits following public disclosure. The impact is heightened in sectors with high regulatory scrutiny or where user data integrity is critical, such as finance, healthcare, and government services within Europe.

European organizations should immediately assess their WordPress environments for the presence of the UsersWP plugin and verify the version in use. Until an official patch is released, administrators should implement strict anti-CSRF protections at the web application firewall (WAF) level, including validating the Origin and Referer headers for requests that modify user data. Employing Content Security Policy (CSP) to restrict external script execution can reduce the risk of malicious site interactions. User education to avoid clicking suspicious links while authenticated can help mitigate social engineering vectors. Monitoring logs for unusual user activity or unexpected changes in user profiles is critical for early detection. Once a patch or update is available from Stiofan, immediate application is essential. Additionally, limiting user privileges to the minimum necessary reduces the potential impact of successful exploitation. For high-risk environments, consider temporarily disabling the plugin or restricting access to user management features until remediation is complete.