# Webhook APIs and UI Degraded

- Provider: [GitHub](https://down.guide/github)
- Level: confirmed
- Impact: Degraded
- lasted 19m
- started 2026-05-28 01:13 UTC
- Webhooks
- id: DWN-153c8bf022
- Official page: https://stspg.io/b3pmwnvwf3my

## Updates from GitHub
### 2026-05-28 01:13 UTC: investigating
We are investigating reports of degraded performance for Webhooks

### 2026-05-28 01:27 UTC: monitoring
The degradation affecting Webhooks has been mitigated. We are monitoring to ensure stability.

### 2026-05-28 01:32 UTC: resolved
On May 28, 2026, between 00:54 UTC and 01:19 UTC, some users experienced errors when interacting with the Webhooks API, including webhook delivery history and configuration endpoints. On average, the error rate was 0.28% and peaked at 0.45%. This was due to a bug that caused a single Kubernetes pod to enter a CrashLoopBackOff after receiving a 500 with an empty response body from Cosmos DB.
We mitigated the incident by restarting the service. To prevent future incidents, we are pushing a change to handle this response scenario from Cosmos DB appropriately.

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