CVE-2026-107306 Drupal CVE debrief

Who should care

Defenders responsible for Drupal installations, particularly those with user roles having 'Administer menus and menu links' and 'Use menu link attributes' permissions, should assess exposure and verify module versions.

Why it matters

Defenders should prioritize verifying and updating the Drupal Menu Link Attributes module, restricting permissions, and monitoring for pre-configured unsafe attributes to prevent potential attribute injection and exploitation.

• Verify and update module versions to prevent potential attribute injection
• Restrict permissions to mitigate exploitation
• Monitor for pre-configured unsafe attributes
• Review existing menu link attributes for potential vulnerabilities

Technical summary

The Drupal Menu Link Attributes module does not sufficiently sanitize HTML attributes applied to menu link container elements. This vulnerability requires specific permissions and pre-configured attributes. An attacker must have 'Administer menus and menu links' and 'Use menu link attributes' permissions, and an unsafe container attribute must be pre-configured by a user with 'Administer menu link attributes' permission. The default configuration is not affected. To exploit this vulnerability, an attacker would need to have a role with the required permissions and an unsafe container attribute must already be configured.

Defensive priority

Defenders should prioritize verifying and updating the module version, restricting permissions, and monitoring for pre-configured unsafe attributes.

Recommended defensive actions

• Verify and update the Menu Link Attributes module to version 1.8.0 or later
• Restrict permissions to 'Administer menus and menu links', 'Use menu link attributes', and 'Administer menu link attributes'
• Monitor for pre-configured unsafe container attributes
• Review and sanitize existing menu link attributes
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The vulnerability is confirmed by the CVE Program and NVD records, as well as the Drupal security advisory. However, details on exploitation and impact are limited. Defenders should verify the module version, review existing menu link attributes for potential vulnerabilities, and monitor for pre-configured unsafe attributes. The CVE Program and NVD records provide official confirmation of the vulnerability, but additional details on exploitation and impact are not available. To further assess exposure, defenders should review the CVE-

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.