CVE-2026-1644 in WP Frontend Profile Plugin
Summary
by MITRE • 03/07/2026
The WP Frontend Profile plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.3.8. This is due to missing nonce validation on the 'update_action' function. This makes it possible for unauthenticated attackers to approve or reject user account registrations via a forged request granted they can trick an administrator into performing an action such as clicking on a link.
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Analysis
by VulDB Data Team • 03/08/2026
The WP Frontend Profile plugin for WordPress represents a widely used tool that allows users to manage their profiles and registration processes within WordPress environments. This particular vulnerability affects all versions up to and including 1.3.8, creating a significant security risk for WordPress installations that rely on this plugin for user management and registration workflows. The vulnerability stems from a fundamental flaw in the plugin's security implementation where proper validation mechanisms are absent, specifically within the update_action function that handles user registration approval processes.
The technical flaw manifests as a complete absence of nonce validation within the update_action function, which serves as the primary mechanism for authenticating and authorizing user registration approval or rejection requests. Nonce validation represents a critical security control that ensures requests originate from legitimate sources within the WordPress environment by generating unique, time-sensitive tokens that must be verified before any privileged operations can be executed. Without this validation, attackers can craft malicious requests that appear to come from legitimate administrative sources, bypassing the normal authentication and authorization checks that should protect sensitive user management functions.
The operational impact of this Cross-Site Request Forgery vulnerability extends beyond simple privilege escalation, potentially allowing unauthenticated attackers to manipulate user registration workflows with severe consequences for site integrity and user data protection. An attacker capable of tricking an administrator into clicking a malicious link or visiting a compromised website could inadvertently approve or reject user registrations, potentially leading to account takeovers, unauthorized access to user data, or disruption of legitimate user registration processes. This vulnerability particularly affects sites that rely heavily on user registration approval workflows, where administrators must manually review and approve new user accounts before they can access site resources.
This vulnerability aligns with CWE-352, which specifically addresses Cross-Site Request Forgery flaws in software applications, and corresponds to ATT&CK technique T1211, which covers the exploitation of weaknesses in web applications through CSRF attacks. The absence of proper nonce validation directly violates security best practices established by WordPress core security guidelines and represents a failure to implement the principle of least privilege in user management operations. Organizations using this plugin should immediately implement mitigations including immediate version updates to patched releases, implementation of additional security layers such as web application firewalls, and comprehensive review of all user registration approval workflows to prevent unauthorized modifications to user account states.