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Supabase · Data and observabilityJul 16, 2026, 17:55 UTC

S3 endpoints for keys with special characters broken

MinorNot disclosedUpdated 18h ago
Jul 16, 17:55 UTCJul 16, 18:49 UTC
Duration
54m
Impact
Minor
Root cause
Not disclosed
Supabase, 90 days
56 incidents
Affected
Storage
Status page

Final update

This incident has been resolved. A recent API Gateway deployment altered how certain special characters in S3 object key paths were encoded before reaching storage, causing signature verification failures (403) for affected requests. The change has been reverted and issue is now fixed.

Timeline

  1. Resolved · Jul 16, 18:49 UTC
    This incident has been resolved. A recent API Gateway deployment altered how certain special characters in S3 object key paths were encoded before reaching storage, causing signature verification failures (403) for affected requests. The change has been reverted and issue is now fixed.
  2. Identified · Jul 16, 18:32 UTC
    We have implemented a PR rollback to mitigate this issue. We will actively monitor its progress
  3. Identified · Jul 16, 18:23 UTC
    A likely mitigation has been identified and we are discussing the proper implementation method.
  4. Identified · Jul 16, 17:55 UTC
    We have identified an issue where S3 endpoints for keys with special characters will be broken. We are actively investigating the correct mitigation for this issue.

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Full history

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