CVE-2026-33419

critical · 9.1

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.

9.1

CVSS

0.4%

EPSS (exploit prob.)

38th

EPSS percentile

2026-03-24

Published

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-204CWE-307

Affected products

Vendor	Product	Affected versions
minio	minio	< 2026-03-17t21-25-16z

Check a specific version with /api/v1/cve/match.

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-33419