GitHub Outage: Pull Requests and Issues Hit by Database Index Bug
Wednesday, August 12: GitHub, Incident with Pull Requests and Issues
On August 12, 2026, GitHub experienced an incident affecting Pull Requests, Issues, and Search. The root cause was a database index hint referencing an index removed by a recent migration, leading to query failures and 500 errors for some users. GitHub disabled the problematic configuration and saw recovery, but continued monitoring to ensure full resolution.
A database index hint was referencing an index that had been removed by a recent migration, causing query failures for some users.