CVE-2026-14378 in DevKit Pro Plugin
Summary
by MITRE • 10/02/2026
The DevKit Pro plugin for WordPress is vulnerable to Authentication Bypass Leading to Administrator Account Takeover in all versions up to, and including, 2.3.0 This is due to the `revert_switch` handler trusting the attacker-controlled `original_user_id` cookie as the privileged identity: `verify_nonce_and_capability()` incorrectly checks the `manage_options` capability on the user identified by the cookie rather than on the actual requester via `current_user_can()`, while the switch-back form and a valid session-bound nonce are emitted publicly via `wp_footer` to any visitor — including unauthenticated users — whenever that cookie is present. This makes it possible for unauthenticated attackers to set the `original_user_id` cookie to any administrator's user ID, collect the rendered nonce, and POST it back to the `revert_switch` handler, causing `wp_set_auth_cookie()` to be called with the administrator's ID and granting the attacker a full administrator-level authenticated session and complete site takeover.
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Analysis
by VulDB Data Team • 10/02/2026
The DevKit Pro plugin for WordPress contains a critical authentication bypass vulnerability affecting all versions up to and including 2.3.0, which allows unauthenticated attackers to achieve full administrative account takeovers. This flaw stems from an insecure implementation of the revert_switch handler within the plugin's codebase. The core technical deficiency lies in how user identity is validated during session management operations. Specifically, the verify_nonce_and_capability function relies on a cookie named original_user_id to determine which user’s privileges should be checked and applied. Instead of verifying capabilities against the currently authenticated requestor using standard WordPress functions like current_user_can(), the code trusts the attacker-controlled value stored in this cookie. This design error effectively decouples identity verification from actual authentication state, creating a significant security gap that can be exploited remotely without any prior credentials.
The operational impact of this vulnerability is severe, as it enables complete site compromise by an unauthenticated actor. The exploit chain begins with the attacker setting the original_user_id cookie to the user ID of an existing administrator on the target WordPress installation. Because the plugin emits a switch-back form along with a valid session-bound nonce via wp_footer whenever that specific cookie is present, any visitor can retrieve this data simply by loading a page where the plugin is active. The nonce generation process does not sufficiently bind the token to the actual HTTP requestor’s authenticated state but rather associates it with the user ID specified in the cookie. Consequently, an attacker can capture this publicly available nonce and submit it back to the revert_switch endpoint along with their manipulated cookie value. Upon receiving these inputs, the server validates the nonce against the administrator account identified by the cookie and proceeds to call wp_set_auth_cookie() for that administrator’s ID. This action grants the attacker a fully authenticated session with administrative privileges, leading to total control over the WordPress site including access to sensitive data, plugin configurations, and potentially further exploitation of other vulnerabilities within the application environment.
From a classification perspective, this vulnerability aligns closely with CWE-287 Improper Authentication, as the system fails to correctly verify the identity of a user attempting to gain elevated privileges. Additionally, it relates to CWE-345 Insufficient Verification of Data Authenticity because the application trusts an external input (the cookie) for critical security decisions without adequate validation against the actual session context. In terms of offensive cyber operations and threat modeling, this attack vector maps directly to MITRE ATT&CK technique T1078 Valid Accounts, specifically within the sub-context of Local Account Takeover where valid credentials or sessions are hijacked or forged through logic flaws rather than credential theft. The ability for an unauthenticated user to assume administrative rights represents a high-severity risk that undermines the fundamental trust model of web applications relying on session-based authentication mechanisms.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. For administrators currently running affected versions, upgrading DevKit Pro to version 2.3.1 or later is the primary recommended action as it resolves this logic flaw by ensuring that capability checks are performed against the actual authenticated user rather than a cookie-supplied identifier. Until an upgrade can be implemented, temporary mitigations include restricting access to WordPress admin pages via IP whitelisting if feasible, although this may not fully prevent exploitation depending on network topology and attacker location. It is also advisable to review server logs for unusual patterns of requests involving the revert_switch endpoint or frequent changes in session cookies associated with administrative accounts. Future development practices should enforce strict adherence to secure coding standards that mandate using built-in framework functions like current_user_can() for all privilege checks, ensuring that identity verification always reflects the true state of the authenticated requestor rather than mutable client-side data such as cookies.