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Expected Behavior

When passing conditional headers such as if-match, if-not-match, if-modified-since, or if-unmodified-since with a DeleteObject request, the latter must either fail or complete based on the conformity of the object state with the provided condition(s).

Current Behavior

DeleteObject completes successfully, whether the aforementioned headers are present.

Steps to Reproduce (for bugs)

1. Spin up a MinIO container/app
2. Create a bucket
3. Create an object in a bucket
4. Overwrite the object
5. Call the DeleteObject operation against the object passing the ETag of the object (3) in the if-match header.

Context

AWS S3 has added support for conditional deletes for general-purpose buckets recently: aws.amazon.com/about-aws/whats-new/2025/09/amazon-s3-conditional-deletes-s3-general-purpose-buckets/

Regression

No

Your Environment

• Version used (minio --version): minio version RELEASE.2025-09-07T16-13-09Z (commit-id=07c3a429bfed433e49018cb0f78a52145d4bedeb)
• Operating System and version (uname -a): Linux NV-F4SHWL3 6.6.87.2-microsoft-standard-WSL2 Full restructure in accordance with #1 SMP PREEMPT_DYNAMIC Thu Jun 5 18:30:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux