CVE-2024-24747: MinIO unsafe default: Access keys inherit `admin` of root user, allowing privilege escalation

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 34.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-01-31 · updated 2026-06-17
Weakness: CWE-269

Description

MinIO is a High Performance Object Storage. When someone creates an access key, it inherits the permissions of the parent key. Not only for `s3:*` actions, but also `admin:*` actions. Which means unless somewhere above in the access-key hierarchy, the `admin` rights are denied, access keys will be able to simply override their own `s3` permissions to something more permissive. The vulnerability is fixed in RELEASE.2024-01-31T20-20-33Z.

Affected products

minio: 2024-01-31t20-20-33z

References

https://github.com/minio/minio/commit/0ae4915a9391ef4b3ec80f5fcdcf24ee6884e776
https://github.com/minio/minio/releases/tag/RELEASE.2024-01-31T20-20-33Z
https://github.com/minio/minio/security/advisories/GHSA-xx8w-mq23-29g4
https://github.com/minio/minio/commit/0ae4915a9391ef4b3ec80f5fcdcf24ee6884e776
https://github.com/minio/minio/releases/tag/RELEASE.2024-01-31T20-20-33Z
https://github.com/minio/minio/security/advisories/GHSA-xx8w-mq23-29g4

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