403 Forbidden Error in S3 GetObejctMetadata

[JaylenZ8]

Describe the bug

Hi team,

I'm using S3 SDK for .net, we started to meet 403 forbidden error recently when using GetObjectMetadata method when bucketName parameter has slash(/) in it, like "bucketName/subfolder".

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

It works before when bucketName parameter has slash, like "bucketName/subfolder", any server side behavior change we need to be aware?

Current Behavior

GetMetadataObejct('bucketName/subfolder', 'keyName', null) failed with Error making request with Error Code Forbidden and Http Status Code Forbidden. No further error information was returned by the service.
The remote server returned an error: (403) Forbidden.

Reproduction Steps

Code snippet
objectMetadata = client.GetObjectMetadata(bucketName, key, null); // bucket name with slash(/) in side

Possible Solution

No response

Additional Information/Context

No response

AWS .NET SDK and/or Package version used

Package reference

   <PackageReference Update="AWSSDK.Core" Version="3.7.0.4" />
    <PackageReference Update="AWSSDK.RDS" Version="3.7.0.3" />
    <PackageReference Update="AWSSDK.S3" Version="3.7.0.4" />
    <PackageReference Update="AWSSDK.SecurityToken" Version="3.7.0.3" />

Targeted .NET Platform

.NET Framework 4.7.2

Operating System and version

Windows

[dscpinheiro]

The SDK used to (unintentionally) allow for the key prefix name to be specified as part of the bucket name, but this changed back in 2022 (see this comment for more details: #2622 (comment)).

You'll need to change your code from:

client.GetObjectMetadata("test-bucket/docs", "myfile.txt");

To:

client.GetObjectMetadata("test-bucket", "docs/myfile.txt");

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