Provider
PantheonIncident detail
Drupal 10/11 Site Creation Failing
Resolved incidentMajor1 affected service
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Timeline
Incident updates
Every update Pantheon posted, oldest to newest, exactly as it appeared on their official status page.
Investigating
Site creation of Drupal 10 and 11 sites are failing due to a <a href="https://symfony.com/blog/cve-2026-46644-insecure-equivalence-in-symfony-polyfill-intl-idn-for-ascii-only-xn-labels">security vulnerability</a> recently disclosed in the "symfony/polyfill-intl-idn" library. We are working on a fix to re-enable site creation functionality.
Identified
The issue has been identified and a fix is being implemented.
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.
Resolved
This incident has been resolved.
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