Incident With Webhooks
Severity: Minor
Category: Change Process
Service: GitHub
This summary is created by Generative AI and may differ from the actual content.
Overview
Webhooks service was degraded and delivered webhook payloads with missing installation information between 11:35 UTC and 19:20 UTC on June 17, 2026, impacting 11.3% of deliveries and affecting multiple events.
Impact
11.3% of webhook deliveries were impacted, with customers relying on the installation field for authentication or routing unable to process affected webhooks
Trigger
Defect in a new delivery code path that failed to include installation data in webhook payloads
Detection
Not explicitly stated
Resolution
Mitigated by disabling the feature flag controlling the new code path
Root Cause
Defect in a new delivery code path