Drupal core critical security update (CVE-2026-108097)
Update - Drupal 7.107 is now available as an upstream update.

Customers running Drupal 7 applications should update to Drupal 7.107 as soon as possible.
To apply the update, use the Drupal core update workflow in the Pantheon Dashboard.
Oct 14, 2026 - 13:51 PDT
Update - We are aware of the Drupal 7 release and will update this incident when it is available as an upstream update.
Oct 14, 2026 - 12:49 PDT
Monitoring - A Drupal core security release is now available for CVE-2026-108097 (risk 19/25). It fixes a critical remote code execution vulnerability in the Field UI module.
Drupal core alone is not directly exploitable, but several exploit paths exist through contributed modules, including at least one path that does not require authentication. Custom code can also expose the vulnerable functionality.

Action required

Update your Drupal sites to a patched release as soon as possible:
Drupal 11.4.10
Drupal 11.3.19
Drupal 10.6.19

Drupal 12.0.0-alpha1 through 12.0.0-beta1 are also affected. See the Drupal security advisory for Drupal 12 remediation details.
Drupal 11.2.x and earlier, Drupal 10.5.x and earlier, Drupal 9, and Drupal 8.9 are end-of-life. These versions are affected and do not receive security patches. Upgrade sites on these versions to a supported Drupal release.

To apply the update, use the Drupal core update workflow in the Pantheon Dashboard. See the Pantheon security release note for instructions.

Mitigation until you update

If you cannot update immediately, uninstall the core Field UI module (field_ui).
The Drupal Security Team states that this protects your site until you update.

As a founding Platform Partner of the Drupal Steward program, Pantheon provides protection against some known attack vectors. Drupal Steward does not cover all possible exploits, so it does not replace updating your site.
Oct 14, 2026 - 10:52 PDT
Customer Sites Operational
Dashboard Operational
Global CDN Operational
Spinup Operations Operational
Workflow Operations Operational
Support Tickets Operational
Support Chat Operational
Terminus Operations Operational
Site Certificate Provisioning Operational
Billing Operations Operational
Autopilot Operational
Git Operational
Front-End Sites (Beta) Operational
Content Publisher (Public Preview) Operational
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
System Metrics Month Week Day
Customer Site Availability
Fetching
Average Dashboard Load Time
Fetching

Oct 14, 2026

Unresolved incident: Drupal core critical security update (CVE-2026-108097).

Oct 13, 2026

Routine Maintenance Impacting Site Management Operations
Completed - The scheduled maintenance has been completed.
Oct 13, 19:00 PDT
In progress - Scheduled maintenance is currently in progress. We will provide updates as necessary.
Oct 13, 18:00 PDT
Scheduled - As part of the upcoming 10/13 routine maintenance window, updates to two systems will result in limited service interruptions:

1. Site management workflow systems: We will update the systems that process deployments, database operations, and other site management workflows. These workflows will be temporarily interrupted, and jobs queued before the maintenance window may fail.

2. Next.js request-routing service: We will update the security settings for the service that routes requests to Next.js sites. Next.js sites may experience a brief interruption while this work is completed.

We recommend avoiding deployments and other site management workflows during the maintenance window. While we do not anticipate any impact to uptime for WordPress or Drupal sites during this maintenance window, Next.js sites may experience a brief interruption.
Oct 13, 18:00 PDT
Workflow Failures
Resolved - This incident has been resolved.
Oct 13, 18:01 PDT
Identified - The issue has been identified and a fix is being implemented.
Oct 13, 17:45 PDT
Investigating - We are investigating an issue causing workflow failures in the Pantheon Dashboard.

Our Engineering team is actively reviewing the issue and working to restore normal functionality. We will provide another update within 1–3 hours, or sooner if more information becomes available.
Oct 13, 16:48 PDT

Oct 12, 2026

Dashboard not loading
Resolved - This incident has been resolved.
Oct 12, 17:58 PDT
Update - We are continuing to monitor for any further issues.
Oct 12, 14:58 PDT
Monitoring - The dashboard experienced a temporary increase in errors. The issue has been resolved, and the dashboard is loading normally again. We will continue monitoring to confirm the service remains stable.
Oct 12, 14:58 PDT

Oct 11, 2026

No incidents reported.

Oct 10, 2026

No incidents reported.

Oct 9, 2026

No incidents reported.

Oct 8, 2026

No incidents reported.

Oct 7, 2026

Database Connection Issues and 504 Errors on a Subset of Sites
Resolved - This incident has been resolved.
Oct 7, 19:12 PDT
Monitoring - A fix has been implemented and we are monitoring the results.
Oct 7, 16:08 PDT
Identified - We have identified the cause of the 504 errors affecting the site. Service has been restored, and our verification confirms that uncached requests to the live site are returning successfully.

The issue was caused by an interruption of the database server supporting the site. The database has recovered, and our Engineering team is completing cleanup and validating the affected environment, including a previously unsuccessful database migration.

We are continuing to monitor the site and will provide another update as soon as more information becomes available. If you continue to experience issues, please contact helpdesk@pantheon.io.
Oct 7, 15:20 PDT
Investigating - We are investigating reports that a subset of Pantheon-hosted sites are returning 504 Gateway Timeout errors due to a database server issue.

Customers may experience site timeouts or failed page loads, and database migrations for affected environments may also be impacted.

Our Engineering team is actively working to restore normal service and verify that affected database operations are completing successfully. Some affected sites have begun recovering, but intermittent errors may continue while the investigation remains ongoing.

We will post updates as soon as more information becomes available. If you need immediate assistance, please contact helpdesk@pantheon.io.
Oct 7, 13:54 PDT

Oct 6, 2026

Security Advisory: Malicious Activity Affecting Platform Hosts
Resolved - This incident has been resolved.
Oct 6, 15:21 PDT
Update - Remediation and platform hardening remain ongoing.

We are continuing to monitor systems closely while working directly with affected customers.
Oct 5, 11:08 PDT
Update - We are continuing to monitor and work through the remaining remediation and hardening. Our initial response is complete, and we are now working directly with the affected customers on site cleanup and credential rotation.

We have added further protections and monitoring to help prevent and detect this type of activity. Based on the information available to us, we have found no evidence that any other customer's site or data was accessed. We will share another update as the remaining work progresses.

As a reminder, the most effective protection is keeping your site current: please keep your CMS, plugins, themes, and modules up to date, remove anything you no longer use, review your user and credential access, and contact Pantheon Support if you notice unexpected code, deployments, or other changes on your site.
Oct 3, 09:29 PDT
Update - As our investigation has continued, we have determined that a small number of customer sites — not one — were affected.

In each case, the site was first compromised through a weakness in its own application, then used to interact with platform services. We are working directly with the affected customers on cleanup and credential rotation, and we have added platform controls to restrict this activity and detection to identify it going forward.

The activity remains limited to the individual affected sites and their own data. We have found no evidence that any other customer's site or data was accessed.

What you can do: Keeping your site current is the most effective protection.
Please update your CMS core, plugins, themes, and modules to the latest versions; remove plugins, themes, and modules you don't use; and delete sites you no longer need. If you notice unexpected code, deployments, or changes on your site, contact Pantheon Support.

We will continue to post updates here.
Oct 2, 08:05 PDT
Monitoring - Beginning September 29, Pantheon identified malicious activity in which an attacker gained control of a customer website and used it to target platform resources.

Activity from the compromised site attempted to exploit a Linux kernel vulnerability (CVE-2026-53362) on platform application hosts, and some sites may have briefly experienced interruptions as a result.

We have taken the following actions:
- Disabled and deleted the affected site.
- Accelerated the operating-system and kernel updates already in progress, bringing application hosts to a version that addresses this vulnerability.
- Deployed additional platform protections and monitoring.

We have notified the affected customer directly. The compromise was limited to that single site; based on the information available to us, we have found no evidence of platform-wide data exfiltration or that this activity exposed data belonging to other customers.
We are continuing to review platform activity and will update this advisory if that changes.

How to protect your site:
Attackers most often gain control of a site through outdated or unmaintained code. Keeping your site current is the most effective protection. We strongly encourage all customers to keep CMS core, plugins, and themes fully updated, remove and delete sites and code you no longer use, and review user and credential access. If you notice unexpected code, deployments, or changes on your site, contact Pantheon Support.

We will post updates here as more information becomes available. If you have questions, please contact Pantheon Support.
Oct 1, 12:38 PDT

Oct 5, 2026

Oct 4, 2026

No incidents reported.

Oct 3, 2026

Oct 2, 2026

Intermittent Dashboard and Workspace Errors
Resolved - This incident on Pantheon Dashboard and workspace operations has been resolved.
Oct 2, 19:19 PDT
Update - We are continuing to monitor for any further issues.
Oct 2, 17:08 PDT
Monitoring - A fix has been implemented and we are monitoring the results.
Oct 2, 17:07 PDT
Update - We are continuing to investigate this issue.
Oct 2, 12:55 PDT
Investigating - We are investigating an issue causing intermittent errors in the Pantheon Dashboard and some workspace operations. Customers may experience failed page loads or intermittent authorization errors when accessing the Dashboard or managing workspace resources.

Our Engineering team is actively reviewing the issue and working to restore normal functionality. We will provide another update within 1–3 hours, or sooner if more information becomes available.
If you are unable to access the Dashboard and need urgent assistance, please contact helpdesk@pantheon.io.
Oct 2, 09:30 PDT

Oct 1, 2026

Sep 30, 2026

Appserver availability interruptions
Resolved - Some sites experienced brief interruptions while we responded to an issue affecting appserver stability. We completed a rolling security upgrade and restart of appservers across all regions. All known affected sites have recovered, and the platform is operating normally.

We are continuing to monitor the platform and complete follow-up hardening work.
We apologize for the disruption and appreciate your patience.
Sep 30, 09:53 PDT
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