Firebase incident

Some users in asia-east1 could not access environment variables at build time

Major Resolved

Firebase experienced a major incident on October 6, 2025 affecting App Hosting and App Hosting (global), lasting 4d 7h. The incident has been resolved; the full update timeline is below.

Started
Oct 06, 2025, 03:00 PM UTC
Resolved
Oct 10, 2025, 10:45 PM UTC
Duration
4d 7h
Detected by Pingoru
Oct 06, 2025, 03:00 PM UTC

Affected components

App HostingApp Hosting (global)

Update timeline

  1. resolved Oct 10, 2025, 11:58 PM UTC

    A slow-rolling update to the build system of Firebase App Hosting broke customers' code from being able to see environment variables defined in YAML files. Though the rollout started Monday October 6, we have not correlated this with any customer reports before 8P PST Thursday October 9. The experiment has been rolled back and most customers were never on the experiment path.