CVE-2025-31489highCWE-347

CVE-2025-31489: high-severity vulnerability in minio

MinIO performs incomplete signature validation for unsigned-trailer uploads

Published

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36Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendcvss 8.7epss 2.5%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
minio · minio
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