CVE-2026-15257 in RegistrationMagic Plugin
Summary
by MITRE • 07/30/2026
The RegistrationMagic WordPress plugin before 6.0.9.4 does not perform authorization, ownership or nonce checks on a front-end submission-editing action, allowing unauthenticated attackers to overwrite other users' form submissions and the profile fields of the associated non-administrator WordPress accounts.
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Analysis
by VulDB Data Team • 07/30/2026
The vulnerability in RegistrationMagic WordPress plugin versions prior to 6.0.9.4 represents a critical authorization flaw that undermines the security model of WordPress user management systems. This issue stems from the plugin's failure to implement proper access controls during front-end form submission editing operations, creating a pathway for unauthorized manipulation of user data. The vulnerability affects both form submissions and profile fields associated with non-administrator accounts, demonstrating a fundamental breakdown in the plugin's security architecture that directly violates core WordPress security principles.
The technical implementation flaw occurs when the plugin processes front-end editing actions without validating whether the requesting user possesses legitimate authorization to modify specific submissions or profile data. This absence of nonce verification and ownership checks creates an open door for attackers to submit malicious requests that target other users' data. The vulnerability operates at the application layer, specifically within the plugin's form handling mechanisms where it should enforce strict access controls but instead allows arbitrary modifications through crafted HTTP requests.
The operational impact of this vulnerability extends beyond simple data corruption, as it enables attackers to overwrite legitimate user submissions and modify profile information without authentication. This creates opportunities for social engineering attacks, credential theft, and data manipulation that can compromise user trust and system integrity. Attackers can exploit this weakness to overwrite form entries with malicious content, potentially spreading malware or conducting phishing campaigns through compromised user profiles. The vulnerability particularly affects non-administrator accounts, making it a significant concern for WordPress installations where user-generated content is prevalent.
This security gap aligns with CWE-863, which addresses "Incorrect Authorization" issues in software systems, and represents a clear violation of the principle of least privilege in access control. From an attacker's perspective, this vulnerability maps to ATT&CK technique T1078.004, which covers valid accounts obtained through credential reuse or manipulation, as attackers can exploit this weakness to gain unauthorized access to user data without needing legitimate credentials. The vulnerability essentially provides a backdoor mechanism that bypasses normal WordPress authentication flows and could be leveraged for more sophisticated attacks including privilege escalation or lateral movement within compromised systems.
Organizations should immediately update to RegistrationMagic plugin version 6.0.9.4 or later, which implements proper authorization checks and nonce validation for all front-end editing operations. Additional mitigations include implementing web application firewalls to monitor for suspicious form submission patterns, conducting regular security audits of plugin installations, and ensuring that only trusted users have access to front-end editing capabilities. Security teams should also implement monitoring solutions that can detect unauthorized modifications to user profiles or form submissions as potential indicators of exploitation attempts.