Pantheon experienced a major incident on May 27, 2026 affecting Spinup Operations, lasting 5h 37m. The incident has been resolved; the full update timeline is below.
Affected components
Spinup Operations
Update timeline
- investigating May 27, 2026, 04:22 PM UTC
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.
- identified May 27, 2026, 06:08 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring May 27, 2026, 08:48 PM UTC
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.
- resolved May 27, 2026, 09:59 PM UTC
This incident has been resolved.