Green Security incident

Increased failures in patient search module (Epic/Cerner Integration)

Minor Resolved View vendor source →

Green Security experienced a minor incident on September 14, 2026 affecting Visitor Management Portal, lasting 1d 3h. The incident has been resolved; the full update timeline is below.

Started
Sep 14, 2026, 01:56 PM UTC
Resolved
Sep 15, 2026, 05:03 PM UTC
Duration
1d 3h
Detected by Pingoru
Sep 14, 2026, 01:56 PM UTC

Affected components

Visitor Management Portal

Update timeline

  1. investigating Sep 14, 2026, 01:56 PM UTC

    We are currently investigating an issue where the patient search integration with Epic/Cerner through the FHIR interface is experiencing an increase in `invalid_client` errors.

  2. identified Sep 14, 2026, 02:59 PM UTC

    We have identified the issue and are working through a fix.

  3. monitoring Sep 14, 2026, 04:53 PM UTC

    We have identified the issue as a rotated JWK Set key that was not picked up by Epic. Your CSM will reach out with a new per-tenant JWK Set URL (newly required best practice from Epic) to re-fetch the newest keys for your instance. These URLs properly handle key rotations.

  4. resolved Sep 16, 2026, 03:03 PM UTC

    We have restored the previous keys yesterday and via monitoring have found that all patient search functionality is working as it has previously. We encourage all customers to reach out to their CSM to plan for a migration to a tenant specific JWK Set URL.