CVE-2026-12492 in OTP Login for WooCommerce Plugin
Summary
by MITRE • 07/16/2026
The Happy Coders OTP Login for WooCommerce WordPress plugin before 2.8 does not verify that a one-time password was actually validated before authenticating a user based on a supplied identifier, allowing unauthenticated attackers to log in as any existing user, including administrators, as well as to create new accounts.
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Analysis
by VulDB Data Team • 07/16/2026
The Happy Coders OTP Login for WooCommerce WordPress plugin vulnerability represents a critical authentication bypass flaw that undermines the fundamental security model of the affected system. This issue affects versions prior to 2.8 and stems from a fundamental failure in the plugin's validation logic where it accepts user credentials without proper verification of one-time password authenticity. The flaw creates a scenario where attackers can exploit the system's trust mechanism by simply providing a valid user identifier, bypassing the entire OTP validation process that should serve as a security barrier. This vulnerability directly violates the principle of least privilege and authentication integrity that forms the cornerstone of secure application design.
The technical implementation flaw manifests in the plugin's authentication flow where it fails to maintain proper state tracking between OTP generation and validation phases. When a user attempts to authenticate using the OTP system, the plugin accepts the identifier parameter without confirming whether the corresponding one-time password has been successfully validated. This creates an authentication path where any existing user account can be accessed through a simple identifier manipulation attack, effectively nullifying the multi-factor authentication security controls that the plugin was designed to implement. The vulnerability operates at the application layer and can be exploited through various attack vectors including direct API calls, parameter manipulation, or social engineering techniques that leverage the trust model.
The operational impact of this vulnerability extends far beyond simple unauthorized access, creating a comprehensive security breach that allows attackers to escalate privileges and potentially compromise entire administrative accounts. Attackers can leverage this flaw to log in as any existing user, including high-privilege administrator accounts, which provides them with complete control over the WordPress installation. Additionally, the vulnerability enables account creation capabilities, allowing attackers to establish persistent access points within the system. This represents a severe compromise of the authentication mechanism and can lead to data breaches, unauthorized modifications, and complete system compromise according to attack techniques documented in the mitre att&ck framework under credential access and privilege escalation domains.
Organizations using affected versions of this plugin face immediate security risks that require urgent remediation. The vulnerability aligns with common weakness enumerations such as cwe-287 which addresses authentication failures, and cwe-306 which covers missing authentication. Security teams should implement immediate mitigations including disabling the affected plugin until a patched version is deployed, reviewing access logs for suspicious authentication patterns, and implementing additional monitoring controls. The mitigation strategy should also include verifying that all user accounts have proper authentication mechanisms in place and conducting thorough security audits of other plugins and themes that may present similar vulnerabilities. This issue highlights the critical importance of proper input validation and state management in authentication systems according to industry standards and best practices established by organizations like nist and owasp.