# Drupal 10/11 Site Creation Failing

- Provider: [Pantheon](https://down.guide/pantheon)
- Level: confirmed
- Impact: Partial outage
- lasted 5h 38m
- started 2026-05-27 16:22 UTC
- Spinup Operations
- id: DWN-ed09cdac92
- Official page: https://stspg.io/rqd7tqlw47wm

## Updates from Pantheon
### 2026-05-27 16:22 UTC: investigating
Site creation of Drupal 10 and 11 sites are failing due to a security vulnerability recently disclosed in the "symfony/polyfill-intl-idn" library. We are working on a fix to re-enable site creation functionality.

### 2026-05-27 18:08 UTC: identified
The issue has been identified and a fix is being implemented.

### 2026-05-27 20:48 UTC: monitoring
A fix has been implemented and site creation should be working again. Please contact Support if you continue to have issues with new site creation.

### 2026-05-27 21:59 UTC: resolved
This incident has been resolved.

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