CVE-2025-47709 is a Missing Authorization vulnerability (CWE-862) found in the Drupal Enterprise MFA - TFA (Multi-Factor Authentication - Two-Factor Authentication) module. This vulnerability affects versions from 0.0.0 before 4.7.0 and from 5.0.0 before 5.2.0. The flaw allows an attacker to perform forceful browsing, which means unauthorized users can access restricted resources or functionality by manipulating URLs or requests without proper authorization checks. Specifically, the module fails to enforce authorization controls on certain endpoints or actions, allowing unauthenticated or unauthorized users to bypass intended access restrictions. The vulnerability has a CVSS 3.1 base score of 6.5, indicating a medium severity level. The vector indicates that the attack can be performed remotely (AV:N), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction needed (UI:N). The impact affects confidentiality and integrity but not availability, as unauthorized access could expose sensitive information or allow unauthorized changes but does not disrupt service availability. No known exploits are currently reported in the wild, and no patches are linked yet, suggesting that organizations using affected versions should prioritize updates once available. This vulnerability is critical in environments relying on the Enterprise MFA - TFA module for securing Drupal authentication flows, as it undermines the very purpose of multi-factor authentication by allowing unauthorized access through missing authorization checks.

For European organizations, this vulnerability poses a significant risk to the security of web applications built on Drupal that use the Enterprise MFA - TFA module. Since MFA is a key security control to protect user accounts and sensitive data, bypassing authorization can lead to unauthorized access to user accounts, administrative functions, or confidential information. This can result in data breaches, compliance violations (e.g., GDPR), reputational damage, and potential financial losses. Organizations in sectors such as government, finance, healthcare, and critical infrastructure, which often use Drupal for public-facing and internal portals, are particularly at risk. The medium severity rating reflects that while the vulnerability does not allow full system compromise or denial of service, it compromises the integrity and confidentiality of sensitive data and authentication mechanisms. The lack of required privileges and user interaction makes exploitation easier, increasing the likelihood of successful attacks if the vulnerability is not remediated promptly.

1. Immediate mitigation should include restricting access to the affected endpoints by implementing additional access controls at the web server or application firewall level to prevent unauthorized browsing. 2. Monitor web server logs for unusual URL access patterns indicative of forceful browsing attempts. 3. Disable or uninstall the Enterprise MFA - TFA module if MFA is not critical or if alternative MFA solutions are available until a patched version is released. 4. Once patches or updates are available from Drupal, apply them promptly to ensure authorization checks are correctly enforced. 5. Conduct a thorough review of all authentication and authorization configurations in Drupal to ensure no other modules or custom code suffer from similar missing authorization issues. 6. Educate developers and administrators about secure coding practices related to authorization and access control to prevent recurrence. 7. Implement layered security controls such as Web Application Firewalls (WAF) with rules to detect and block forceful browsing attempts. 8. Regularly audit user permissions and MFA configurations to detect and remediate any unauthorized changes.