CVE-2026-108514 Drupal CVE debrief

Who should care

Defenders responsible for Drupal Core installations, particularly those with user roles that can enter HTML tags or administer menus, should assess exposure and apply patches. This includes operators, platform administrators, and security teams who manage Drupal Core deployments. They should verify the affected scope and apply patches accordingly to prevent exploitation.

Why it matters

CVE-2026-108514 is a cross-site scripting (XSS) vulnerability in the Navigation module of Drupal Core. Defenders should assess exposure and apply patches to prevent exploitation. Users with specific permissions may be able to inject malicious code, and successful exploitation could lead to XSS attacks. Verification of user roles and permissions is necessary.

• Defenders must assess exposure and apply patches to prevent exploitation
• Users with specific permissions may be able to inject malicious code
• Successful exploitation could lead to XSS attacks
• Verification of user roles and permissions is necessary

Technical summary

The Navigation module in Drupal Core does not sufficiently sanitize certain attributes, leading to a cross-site scripting (XSS) vulnerability. An attacker must have a role with permission to enter HTML tags containing specific data attributes or the `administer menu` permission to exploit this vulnerability. The vulnerability can be mitigated by applying patches for affected Drupal Core versions 10.3.0 to 10.6.18, 11.0.0 to 11.3.18, 11.4.0 to 11.4.9, and 12.0.0-alpha1 to 12.0.0-beta1. Defenders should prioritize assessing exposure and applying patches.

Defensive priority

Defenders should prioritize assessing exposure and applying patches for Drupal Core versions 10.3.0 to 10.6.18, 11.0.0 to 11.3.18, 11.4.0 to 11.4.9, and 12.0.0-alpha1 to 12.0.0-beta1.

Recommended defensive actions

• Assess exposure of Drupal Core installations to CVE-2026-108514
• Apply patches for affected Drupal Core versions
• Verify permissions and roles for users who can enter HTML tags
• Monitor for suspicious activity related to the Navigation module
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the XSS vulnerability in the Navigation module of Drupal Core. The vulnerability requires an attacker to have specific permissions to exploit. Evidence is limited to the provided CVE record and source item. Defenders should verify the affected scope and apply patches accordingly. The CVE record was published on 2026-10-14T17:25:38.000Z and has not been modified since then.

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.