CVE-2025-12760 is a vulnerability in the Drupal Email TFA module that allows an attacker to bypass the two-factor authentication (2FA) mechanism by exploiting an alternate path or channel. The vulnerability falls under CWE-288, which involves authentication bypass issues where an attacker can circumvent authentication controls without proper credentials. The affected versions include Email TFA from 0.0.0 up to but not including 2.0.6, indicating that the flaw exists in early versions of the module. The vulnerability enables attackers to bypass the additional security layer provided by email-based 2FA, which is designed to protect user accounts from unauthorized access even if primary credentials are compromised. The technical details specify that the issue is related to functionality bypass, implying that the attacker can reach protected resources or functionality without completing the intended authentication steps. No exploits have been reported in the wild yet, and no CVSS score has been assigned, but the nature of the vulnerability suggests a significant risk. The flaw could be exploited remotely without user interaction or prior authentication, making it a critical concern for web applications relying on this module. Since Drupal is widely used for content management and web applications, this vulnerability could impact a broad range of organizations, especially those in Europe where Drupal adoption is strong. The absence of a patch link indicates that a fixed version (2.0.6 or later) is expected but not yet publicly available at the time of this report. Organizations should monitor for updates and prepare to apply patches promptly. The vulnerability's exploitation could lead to unauthorized access, data breaches, and compromise of user accounts, undermining the security posture of affected systems.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of user accounts protected by Drupal's Email TFA module. Successful exploitation allows attackers to bypass two-factor authentication, potentially gaining unauthorized access to sensitive systems and data. This could lead to data breaches, unauthorized changes to web content, or further lateral movement within networks. Organizations relying on Drupal for critical web applications, including government portals, financial institutions, and healthcare providers, could face operational disruptions and reputational damage. The ease of exploitation without user interaction or authentication increases the threat level, especially for organizations with high-value targets or sensitive information. Additionally, the lack of a current patch means organizations must implement interim controls to mitigate risk. The impact extends to compliance requirements under GDPR, as unauthorized access to personal data could result in regulatory penalties. Overall, the vulnerability threatens the security of web-facing applications and user accounts across Europe, necessitating urgent attention.

1. Upgrade the Drupal Email TFA module to version 2.0.6 or later as soon as the patch is released to address the vulnerability. 2. Until a patch is available, consider disabling the Email TFA module or replacing it with alternative, more secure two-factor authentication methods that do not exhibit this vulnerability. 3. Conduct a thorough review of authentication workflows to identify and close any alternate paths or channels that could be exploited for bypassing authentication. 4. Implement additional monitoring and alerting on authentication events to detect unusual login patterns or bypass attempts. 5. Enforce strong primary authentication controls, including complex passwords and account lockout policies, to reduce the risk of initial credential compromise. 6. Educate users and administrators about the risks associated with this vulnerability and the importance of applying updates promptly. 7. Consider deploying web application firewalls (WAFs) with rules tailored to detect and block attempts to exploit authentication bypass techniques. 8. Regularly audit and test the security of authentication mechanisms to ensure no other bypass vectors exist. 9. Maintain an incident response plan to quickly address any suspected exploitation of this vulnerability.