CVE-2026-33419

UNKNOWN 0.0

MinIO: LDAP login brute-force via user enumeration and missing rate limit

CVSS Score

0.0

EPSS Score

0.1%

EPSS Percentile

15th

MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS (Security Token Service) AssumeRoleWithLDAPIdentity endpoint is vulnerable to LDAP credential brute-forcing due to two combined weaknesses: (1) distinguishable error responses that enable username enumeration, and (2) absence of rate limiting on authentication attempts. An unauthenticated network attacker can enumerate valid LDAP usernames and then perform unlimited password guessing to obtain temporary AWS-style STS credentials, gaining access to the victim's S3 buckets and objects. This issue has been patched in RELEASE.2026-03-17T21-25-16Z.

CWE	CWE-204 CWE-307
Vendor	minio
Product	minio
Published	Mar 24, 2026
Last Updated	Mar 25, 2026

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Affected Versions

minio / minio

< RELEASE.2026-03-17T21-25-16Z

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/minio/minio/security/advisories/GHSA-jv87-32hw-hh99