Description

The Mindstien Quick Login WordPress plugin through 1.0 does not correctly validate a value supplied in the request against the visitor's own session before authenticating them, allowing unauthenticated attackers to obtain a session as the administrator account the Mindstien Quick Login WordPress plugin through 1.0 is configured with.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-10-11T07:17:25.687Z",
  "pubdate": "2026-10-11T07:17:25.687Z",
  "executiveSummary": "The Mindstien Quick Login WordPress plugin through version 1.0 contains a critical authentication bypass vulnerability stemming from improper input validation.\nThe vulnerability allows an unauthenticated remote attacker to gain unauthorized access to the administrator account configured within the plugin.\nThis flaw exists because the plugin fails to verify that the value provided in the authentication request corresponds to the visitor's current session identifier.\nBy manipulating this request, an attacker can effectively impersonate the administrator without requiring legitimate credentials or prior authentication.\nThe impact of this vulnerability is severe, as it grants full administrative control over the affected WordPress installation, enabling arbitrary code execution, sensitive data exfiltration, and complete system compromise.\nThe attack requires no user interaction or elevated privileges, making it highly exploitable for threat actors targeting WordPress environments using this plugin.\nImmediate removal of the vulnerable plugin is advised, as it represents a significant security risk to the integrity and confidentiality of the host system.",
  "technicalDetails": "The vulnerability originates from a failure in the Mindstien Quick Login plugin's authentication logic, where the system performs insecure session validation.\nSpecifically, the plugin processes authentication requests by accepting a user-supplied parameter intended to facilitate a 'quick login' mechanism.\nThe root cause is the absence of a server-side cross-check between this supplied parameter and the actual session data associated with the visitor's browser or request context.\nBecause the plugin does not enforce a strict association between the authentication request and the originator's valid session, an attacker can submit a crafted request containing the expected input value.\nThe plugin backend incorrectly trusts this input, validates it against the hardcoded administrator account configuration, and subsequently generates an authenticated session state for the attacker.\nThe attack flow follows a predictable sequence: First, the attacker identifies the endpoint handled by the Mindstien Quick Login plugin. Second, the attacker constructs a request mimicking a successful login attempt, incorporating the specific value that the plugin expects to authorize the administrator account.\nSince the plugin lacks a cryptographically secure token validation or a check against active session IDs, the backend application assumes the request is legitimate.\nUpon receiving the malicious request, the plugin triggers its authentication function, sets the necessary cookies or session tokens in the attacker's browser to represent the administrative user, and redirects the attacker to the administrative dashboard.\nThis vulnerability is classified as an authentication bypass because it completely circumvents the WordPress core authentication mechanisms. Because the plugin forces the session to the administrator level, the attacker inherits full privileges without needing to provide a password or bypass multi-factor authentication if it were configured elsewhere.\nThe exposure is strictly network-based; any user with access to the WordPress login interface can trigger this behavior remotely. Post-exploitation, an attacker can modify plugin settings, create new administrative users, inject malicious code into the theme files to achieve persistent remote code execution, or access private database content.\nThe vulnerability affects all versions of the Mindstien Quick Login plugin through 1.0. Given the architectural design flaw where trust is placed in unvalidated client-side input for authentication purposes, the system remains persistently vulnerable until the plugin logic is restructured to incorporate robust session validation and secure token-based authentication protocols."
}