Understanding the Authentication Bypass in Drupal Disable Login Page
A security flaw has been identified in the Drupal Disable Login Page module that could allow unauthorized individuals to bypass certain functions. This vulnerability, tracked as CVE-2026-16647, is categorized as a Medium severity issue, meaning it poses a moderate risk to affected websites.
The core of this problem lies in an “Authentication Bypass Using an Alternate Path or Channel.” In simpler terms, this means that even if a website administrator has configured the module to prevent access to the login page, an attacker might still find a different route or method to access restricted functionalities without proper authentication. This could potentially lead to unauthorized actions on a Drupal site if not addressed.
CVE Details
- Product: Drupal Disable Login Page module
- Published: September 2, 2026
- Severity: Medium (CVSS Score 4.1)
- Status: Analyzed
Affected Products
The vulnerability impacts specific versions of the Drupal Disable Login Page module. If you are using this module on your Drupal site, you are affected if your version falls within the following range:
- Versions from 0.0.0 up to and including 1.1.4
It’s crucial for administrators to verify their installed module version to determine their exposure.
Current Status
As of September 8, 2026, the vulnerability has been “Analyzed.” This means that security researchers and developers have thoroughly investigated the issue and understand its nature and potential impact. The next step is typically the release of a patch or updated version to fix the flaw.
Severity Level
With a CVSS score of 4.1, this vulnerability is rated as Medium severity. A medium rating suggests that while the vulnerability could be exploited, it might require specific conditions or could have a limited impact compared to high or critical severity issues. However, an authentication bypass is always a significant concern as it undermines the security controls designed to protect your website.
Possible Solutions
To secure your Drupal site against this authentication bypass vulnerability, the most critical step is to update the Disable Login Page module as soon as an official patch or a new secure version is released. Drupal.org typically provides detailed security advisories with instructions on how to update and mitigate risks.
Since we were unable to retrieve the specific patch details directly from the provided reference at this time, we strongly advise all users of the affected module to:
- Regularly check the official Drupal security advisories, particularly the contrib advisories, for updates related to CVE-2026-16647.
- Prepare to update your module to the fixed version immediately once it becomes available.
- Always keep your Drupal core and all contributed modules and themes up to date to ensure you have the latest security protections.
References
https://www.drupal.org/sa-contrib-2026-111
