MinIO performs incomplete signature validation for unsigned-trailer uploads

Impact This is a high priority vulnerability and users must upgrade ASAP. The signature component of the authorization may be invalid, which would mean that as a client you can use any arbitrary secret to upload objects given the user already has prior WRITE permissions on the bucket, Prior...

Improper Verification of Cryptographic Signature

Overview github.com/minio/minio/cmd is an open source object storage server compatible with Amazon S3 APIs. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature for unsigned-trailer uploads. An attacker can upload arbitrary objects to buckets by usi...

CVE-2025-31489

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. The signature component of the authorization may be invalid, which would mean that as a client you can use any arbitrary secret to upload objects given the user already has prior WRITE permissions on...