CVE-2026-107307 drupal CVE debrief

Who should care

Drupal site administrators and security teams should be aware of this vulnerability, especially those using the Smartlinker AI module. They need to assess if their installations are exposed and take appropriate action to mitigate the risk. Content editors who use the 'Generate internal links' feature should also be informed about the potential risks and any changes to their workflow.

Why it matters

This vulnerability in the Drupal Smartlinker AI module could lead to unauthorized information disclosure through the 'Generate internal links' feature. While exploitation is mitigated by permission requirements, defenders should still prioritize verification, permission review, and monitoring to protect their installations.

• Defenders need to verify if their Drupal installations use the Smartlinker AI module and ensure it's updated to version 1.0.3 or later.
• Reviewing and restricting user permissions for the AI CKEditor 'Generate internal links' feature is crucial to mitigate this vulnerability.
• Monitoring for unusual usage of the 'Generate internal links' feature can help detect potential exploitation attempts.

Technical summary

The Smartlinker AI module for Drupal adds a 'Generate internal links' action to the AI CKEditor toolbar. This feature allows editors to select text and search the site's content for relevant pages to link to. However, the module's search query does not respect entity access controls when returning results to the browser. This vulnerability is partially mitigated by the requirement that users must have permission to use the AI CKEditor 'Generate internal links' feature on a text format.

Defensive priority

Defenders should prioritize verifying if their Drupal installations use the Smartlinker AI module and ensure it's updated to version 1.0.3 or later. They should also review user permissions for the AI CKEditor 'Generate internal links' feature, restricting it to necessary roles only.

Recommended defensive actions

• Verify if the Smartlinker AI module is installed and update to the latest version if necessary.
• Review and restrict user permissions for the AI CKEditor 'Generate internal links' feature to only required roles.
• Monitor for any unusual usage of the 'Generate internal links' feature, especially from unexpected user accounts.
• Perform a thorough review of the system to identify any potential exposure.
• Implement additional monitoring to detect potential exploitation attempts.
• Conduct a comprehensive asset inventory to ensure all instances are accounted for.
• Track changes and updates to the Smartlinker AI module for future security advisories.

Evidence notes

The vulnerability exists in the Smartlinker AI module for Drupal, specifically in its 'Generate internal links' feature. The module's search query doesn't respect entity access controls, potentially exposing internal links to unauthorized users. However, exploitation is mitigated as users need permission to use this feature on a text format.

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.