Description

Unauthenticated Broken Authentication in RegistrationMagic <= 6.0.9.8 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.4",
  "pubDate": "2026-08-31T21:17:53.320Z",
  "pubdate": "2026-08-31T21:17:53.320Z",
  "executiveSummary": "The RegistrationMagic plugin for WordPress, specifically in versions 6.0.9.8 and below, contains a critical Broken Authentication vulnerability. This security flaw allows unauthenticated remote attackers to bypass established authentication mechanisms, potentially leading to unauthorized access to the application.\nThe vulnerability type is categorized under Improper Authentication, where the system fails to verify the identity of a user correctly during the registration or authentication process. The primary impact is a total compromise of the authentication layer, enabling attackers to gain unauthorized access to user accounts or administrative interfaces without providing valid credentials.\nThis vulnerability poses a high risk to organizational data and system integrity. An attacker does not require prior knowledge of the target system or valid credentials to exploit the flaw, making the attack surface publicly accessible. Successful exploitation permits the attacker to act on behalf of other users, including administrators, leading to unauthorized data exfiltration, modification of site content, or further exploitation of the underlying WordPress installation. Given the critical nature of authentication processes, this vulnerability necessitates immediate remediation.",
  "technicalDetails": "The vulnerability resides within the authentication logic of the RegistrationMagic plugin. Investigation of affected versions (<= 6.0.9.8) reveals that the plugin fails to implement stringent validation checks during specific authentication-related workflows, or improperly handles session initialization and credential verification processes.\nThe root cause is identified as a flaw in how the plugin processes authentication requests, specifically failing to properly validate or sanitize the input/session tokens before granting access or establishing a user session. Because these checks are bypassed or incorrectly implemented, the authentication mechanism assumes the identity of a user based on potentially forged or incomplete request data.\nThe exploitation method involves an attacker sending crafted, unauthorized requests to the target WordPress installation where RegistrationMagic is active. By manipulating the request structure—likely targeting specific hooks or functions responsible for handling user authentication or registration persistence—the attacker can trick the system into creating an authenticated session.\nThe attack flow typically initiates by the attacker identifying the target endpoint used by the plugin for authentication. The attacker then crafts an HTTP request, potentially bypassing client-side validation, to interact with the backend logic. Because the server-side implementation lacks sufficient authentication checks, the request is processed, and a valid session is granted for a specific user, often an administrative account if the attacker targets the appropriate user ID.\nThe affected components are those involved in the core authentication flow, likely within the plugin's primary request handling functions. The vulnerability requires no authentication, allowing for unauthenticated exploitation directly from the network. It does not require any specific privilege level prior to the exploit, as the exploit itself grants the privilege.\nPost-exploitation impact is severe, granting the attacker full control over the compromised user account. If an administrative session is successfully established, the attacker can leverage WordPress features to install malicious plugins, modify site settings, execute arbitrary code if other features permit, or pivot to other systems accessible within the environment. The persistent nature of a successful authentication bypass ensures the attacker maintains access until the compromised session is invalidated or the vulnerability is patched."
}