CVE-2025-31489 — MinIO performs incomplete signature validation for unsigned-trailer uploads
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 t…
Published: 2025-04-03 · CVSS: 8.7 · CVSS 4.0
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 the bucket. Prior knowledge of access-key, and bucket name this user might have access to - and an access-key with a WRITE permissions is necessary. However with relevant information in place, uploading random objects to buckets is trivial and easy via curl. This issue is fixed in RELEASE.2025-04-03T14-56-28Z.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7