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Fix: AWS CloudFront Returns 403

Verify OAC/OAI is attached and bucket policy updated

CloudFront 403 is usually an S3 origin permission, an OAC/OAI misconfig, or a WAF rule blocking the request.

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Frequently Asked Questions

What causes AWS CloudFront Returns 403?

CloudFront 403 is usually an S3 origin permission, an OAC/OAI misconfig, or a WAF rule blocking the request.

How to fix AWS CloudFront Returns 403?

Check the origin — for S3, verify Origin Access Control and bucket policy. If WAF is attached, inspect sampled requests for a matched rule before tweaking origin config.

Example fix from Kintify Fix

Input: CloudFront returns 403 for a valid S3 object

Output: Check the origin — for S3, verify Origin Access Control and bucket policy. If WAF is attached, inspect sampled requests for a matched rule before tweaking origin config.

Used by developers debugging real production systems

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