Vulnerability · Published Apr 3, 2025 · Assigned by GitHub_M
CVE-2025-31489MinIO performs incomplete signature validation for unsigned-trailer uploads
High 8.7
In plain English
A high-severity security flaw in minio from minio. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei. Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/minio/minio | 0.0.0-20250403145552-8c70975283f9 | GHSA-wg47-6jq2-q2hh |
| Go | github.com/minio/minio | 0.0.0-20250403145552-8c70975283f9 | GO-2025-3594 |
Affected products (as reported)
Weakness: CWE-347 · Vector: 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
References
- https://github.com/minio/minio/security/advisories/GHSA-wg47-6jq2-q2hh x_refsource_CONFIRM
- https://github.com/minio/minio/pull/21103 x_refsource_MISC