Firebase incident

Incident affecting Hosting

Major Resolved

Firebase experienced a major incident on December 20, 2025 affecting Hosting and Hosting (global), lasting 17d 3h. The incident has been resolved; the full update timeline is below.

Started
Dec 20, 2025, 05:00 PM UTC
Resolved
Jan 06, 2026, 08:30 PM UTC
Duration
17d 3h
Detected by Pingoru
Dec 20, 2025, 05:00 PM UTC

Affected components

HostingHosting (global)

Update timeline

  1. investigating Jan 06, 2026, 05:34 PM UTC

    POST requests against Firebase Hosting Sites with rewrites to Firebase Fuctions can occasionally return unexpected 431 errors.

  2. resolved Jan 06, 2026, 07:29 PM UTC

    The Firebase Hosting team is currently rolling out a fix. It should be available globally within a few hours.