LaunchDarkly incident

CORS errors for a small subset of customers

Minor Resolved View vendor source →

LaunchDarkly experienced a minor incident on August 27, 2025, lasting —. The incident has been resolved; the full update timeline is below.

Started
Aug 27, 2025, 05:31 AM UTC
Resolved
Aug 27, 2025, 04:00 AM UTC
Duration
—
Detected by Pingoru
Aug 27, 2025, 05:31 AM UTC

Update timeline

  1. resolved Aug 27, 2025, 05:31 AM UTC

    A small number of customers using the LaunchDarkly JavaScript client side SDK with use cases that involved a single browser session requesting the same LaunchDarkly environment from two or more domains in certain situations experienced CORS errors when initializing the SDK from secondary domains. The impact started on Aug 22 and was mitigated on Aug 26. This issue has now been resolved.