# CVE-2026-33419

## Summary

- **CVE ID:** CVE-2026-33419
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (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)
- **CWE:** CWE-204, CWE-307
- **Published:** Mar 24, 2026
- **Last Modified:** Mar 25, 2026

## Description

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.

## Affected Products

- minio — minio (< RELEASE.2026-03-17T21-25-16Z)

## References

- [CNA](https://github.com/minio/minio/security/advisories/GHSA-jv87-32hw-hh99)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.44%
- **EPSS Percentile:** 37.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._