CVE-2026-114543 Drupal CVE debrief

Who should care

Drupal administrators and security teams should assess exposure in their environments, especially where non-administrative users have role delegation permissions. Reviewing user roles and permissions is crucial to mitigate potential risks.

Why it matters

CVE-2026-114543 is significant for Drupal administrators and security teams as it involves a module that allows non-administrators to manage users based on delegated roles. The vulnerability could be exploited by users with specific permissions, potentially leading to unauthorized user management actions. Defenders should verify exposure, review role delegation settings, and update the module to mitigate risks.

• Defenders need to verify if their Drupal environment uses the simple_user_management module and assess the role delegation settings.
• Reviewing and restricting role delegation permissions for non-administrative users is crucial to prevent potential misuse.
• Defenders should prioritize updating the module to version 1.11.0 or later if using a vulnerable version.
• Monitoring for unusual user activity or changes in role assignments can help detect potential exploitation attempts.

Technical summary

The simple_user_management module for Drupal is vulnerable due to insufficient checks on role delegation when approving users. It also offers an 'Activate' link for blocked administrators and does not protect user 1 from deactivation or deletion. An attacker must have a role with specific action permissions to exploit this vulnerability. This vulnerability could allow unauthorized user management actions, emphasizing the need for defenders to verify exposure, review role delegation settings, and update the module to mitigate risks. The module's functionality allows non-administrators to approve, deactivate, and delete users based on delegated roles, which, if not properly restricted, could lead to security gaps

Defensive priority

Defenders should prioritize verifying exposure in their Drupal deployments that use the simple_user_management module, especially where non-administrative users have been granted role delegation permissions.

Recommended defensive actions

• Verify if the simple_user_management module is used in your Drupal environment.
• Check if any non-administrative users have been granted role delegation permissions.
• Review user roles and permissions to ensure proper segregation of duties.
• Update the simple_user_management module to version 1.11.0 or later if currently using a vulnerable version.
• Monitor for unusual user activity or changes in role assignments to detect potential exploitation attempts.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The OSV advisory and CVE record provide details on the vulnerability in the simple_user_management module. The advisory specifies that the module does not sufficiently check role delegation and does not protect user 1 from deactivation or deletion.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.