Drupal Core Field UI Remote Code Execution Vulnerability Patched
Drupal released updates for a critical remote code execution flaw in the Field UI module affecting multiple major version branches.
Key points
- Drupal core versions 8.9 through 12.0-beta1 are affected by CVE-2026-108097.
- The vulnerability allows remote code execution, with at least one path requiring no authentication.
- Patches are available for Drupal 10.6.19, 11.3.19, 11.4.10, and 12.0.0-beta2.
The Drupal security team released patches on October 14, 2026, for a critical remote code execution vulnerability in the Field UI module. This flaw, tracked as CVE-2026-108097, affects Drupal core versions ranging from 8.9.0 up to 12.0.0-beta1. The issue is rated critical with a score of 19 out of 25, indicating severe impact on confidentiality and integrity.
The risk
The vulnerability resides within the Field UI module of Drupal core. While core alone does not provide a direct exploit path, multiple serious vectors exist when contributed modules are installed. At least one known exploitation method does not require authentication, allowing attackers to execute arbitrary code remotely. Custom code may also expose the vulnerable functionality.
Who is exposed
Sites running Drupal 10.6.x must update to 10.6.19. Drupal 11 users need to move to 11.3.19 or 11.4.10 depending on their minor version. Drupal 12 users should upgrade to 12.0.0-beta2. Versions 10.5.x and below, as well as 11.2.x and below, are end-of-life and receive no security coverage.
Cost and compliance
Drupal Steward protection covers some known attack vectors for this issue, but it does not protect against all possible exploits. Sites using this protection should still upgrade in the near future to mitigate risks from undiscovered attack vectors. No financial penalties or specific compliance mandates were mentioned in the advisory.
What to watch
Security teams should verify that their Drupal installations are patched to the latest versions immediately. Monitor for any unusual server resource consumption or new administrative accounts, which could indicate exploitation. Uninstalling the Field UI module provides temporary protection while updates are applied.
Signals worth monitoring
Teams usually check web server access logs for unusual request patterns targeting form submission endpoints associated with field configuration. Look for unexpected outbound connections from web servers, which may indicate command-and-control communication. Check for new user accounts or privilege changes that occurred without corresponding administrative activity. Validate that file integrity monitoring alerts trigger on unexpected modifications to core or contributed module files.
What to do and how to stay safe: Drupal
- Update Drupal core to the latest patched version for your specific branch immediately.
- Uninstall the core Field UI module if you cannot patch immediately to reduce exposure.
- Audit contributed modules for compatibility with the patched core versions before upgrading.
- Monitor server logs for unauthorized code execution attempts or new administrative accounts.
Step-by-step guide: Vulnerability Prioritization: Fix What Actually Matters First
General security guidance from the SecOps Signal newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
Does this vulnerability require authentication to exploit?
At least one known exploit path does not require authentication, though others may have different requirements.
Which Drupal versions are no longer supported?
Drupal 10.5.x and below, and Drupal 11.2.x and below, are end-of-life and do not receive security coverage.
Does Drupal Steward fully protect against this vulnerability?
No, Drupal Steward protects against some known attack vectors but not all possible exploits.
