# GitLab: Spike of 400 errors on the /oauth/token endpoint

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2025-08-21 11:33 UTC · Resolved: 2025-08-21 14:53 UTC · Duration: 3.3 h
- Updates: 5 · Affected components: API
- [Vendor status page: https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/68a704148b984405a33ebd51](https://status.gitlab.com/pages/incident/5b36dc6502d06804c08349f7/68a704148b984405a33ebd51)
- [Company: GitLab](https://rewindex.com/company/gitlab.md)

## Timeline of updates

- **investigating** 2025-08-21 11:33 UTC: We have noticed a spike of 400 errors on the /oauth/token endpoint. We're currently investigating. More details here: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20398
- **investigating** 2025-08-21 11:49 UTC: No material updates as of now, we're still investigating. More details here: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20398
- **identified** 2025-08-21 12:04 UTC: We have now identified the root cause and are in the process of reverting it. More details here: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20398
- **monitoring** 2025-08-21 13:02 UTC: We have now mitigated the issue and the error spike has subsided. We'll continue to monitor the situation. More details here: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20398
- **resolved** 2025-08-21 14:53 UTC: This incident has now been resolved. Please find more details here: https://gitlab.com/gitlab-com/gl-infra/production/-/issues/20398


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Canonical: https://rewindex.com/company/gitlab/incidents/68a704148b984405a33ebd51 · Markdown: https://rewindex.com/company/gitlab/incidents/68a704148b984405a33ebd51.md · JSON: https://rewindex.com/api/v1/companies/gitlab/incidents/68a704148b984405a33ebd51 · Generated 2026-10-18T09:36:22.078Z