Provider
PantheonIncident detail
Drupal 10/11 Site Creation Failing
Resolved incidentMajor1 affected service
Timeline window
to
Get alerted the next time Pantheon breaks
Free email alerts for the handful of vendors you cannot afford to miss. No card, live in about a minute. Paid plans add Slack, Teams, Discord, and webhook delivery across your whole stack, plus higher API quotas.
Timeline
Incident updates
Every update on the official status source, oldest to newest, exactly as it appeared there.
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.
Keep exploring
More from Pantheon
Neighboring incidents on Pantheon's timeline and the rest of their record on OutageDeck.