Major incident
Pantheon Operations: Drupal 10/11 Site Creation Failing
May 27, 2026, 16:22 UTC
started
21:59 UTC
resolved
5 h 38 min
duration
Affected: Spinup Operations
Current status of Pantheon Operations: Operational — live Pantheon Operations status
Timeline
- May 27, 2026, 16:22 UTCinvestigatingSite 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.
- May 27, 2026, 18:08 UTCidentifiedThe issue has been identified and a fix is being implemented.
- May 27, 2026, 20:48 UTCmonitoringA fix has been implemented and site creation should be working again. Please contact Support if you continue to have issues with new site creation.
- May 27, 2026, 21:59 UTCresolvedThis incident has been resolved.
Updates as published by Pantheon Operations (original).
Other services with incidents at the same time
More Pantheon Operations incidents
- October 23, 2026 PHP Vulnerability CVE-2026-115560
- October 22, 2026 Environment Creation and Multidev Failures
- October 21, 2026 PHP Vulnerabilities CVE-2026-109618 and CVE-2026-109619
- October 18, 2026 Terminus Service Disruption
- October 14, 2026 Drupal core critical security update (CVE-2026-108097)
- October 13, 2026 Workflow Failures