Outage in Supabase
S3 endpoints for keys with special characters broken
Resolved MinorIncident Report
Summary AI Generated
A recent API Gateway deployment changed how special characters in S3 object key paths were encoded, causing signature verification failures (403 errors) for storage requests involving those keys. Supabase Storage was affected for approximately 56 minutes. The fix involved reverting the problematic deployment, which resolved the issue.
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.
Components affected
Supabase StorageTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
16 days ago - at 07/16/2026 06:49PM
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.
IDENTIFIED
16 days ago - at 07/16/2026 06:32PM
We have implemented a PR rollback to mitigate this issue. We will actively monitor its progress
IDENTIFIED
16 days ago - at 07/16/2026 06:23PM
A likely mitigation has been identified and we are discussing the proper implementation method.
IDENTIFIED
16 days ago - at 07/16/2026 05:55PM
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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