Vulnerability in Minio
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 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.
EPSS: 0.024 (82.3th percentile) — read the EPSS interpretation.
Affected products
- Minio — versions < RELEASE.2025-04-03T14-56-28Z
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-31489?
- CVE-2025-31489 is a vulnerability in Minio, classified under Improper Verification of Cryptographic Signature. Published 2025-04-03.
- Is CVE-2025-31489 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.