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GitHub: Incident with Webhooks

MinorStatus: resolvedStarted Resolved (2.6 h)1 updatewww.githubstatus.com (opens in new tab)

Timeline of updates

  1. resolved

    On June 11, 2026, between 19:28 UTC and 21:06 UTC, GitHub webhook deliveries were delayed. Average delivery latency peaked at approximately 3.4 minutes, with some deliveries delayed by as much as 62 minutes at the 99th percentile. No events were lost — delayed events were queued and delivered once processing caught up. This was due to a change in how webhook traffic was distributed across regions: to relieve load on one region, a portion of processing was shifted to another, where higher latency prevented our delivery workers from keeping pace with incoming volume, creating a backlog. We mitigated the incident by rebalancing webhook traffic distribution; as load returned to normal levels, processing caught up and the delivery backlog fully drained. We are working on improving the accuracy of the utilization metrics used to scale our delivery worker pools, and reassess how we distribute webhook traffic across regions, to reduce our time to detection and mitigation of issues like this one in the future.

From GitHub’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.

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This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.

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Cite this

Status incident (vendor impact label: minor) posted by GitHub, started 2026-06-11 19:42 UTC, resolved after 2.6 h, 1 update(s).

Title
Incident with Webhooks
Vendor
GitHub
Date
URL
https://rewindex.com/company/github/incidents/4yz3c18qmdxn

GitHub profileRecent GitHub incidentsAll outages on June 11, 2026GitHub in June 2026MarkdownJSON