Is CVE-2026-33419 actively exploited?

CVE-2026-33419 has no public evidence of in-the-wild exploitation as of 2026-04-08.

What is the CVSS score for CVE-2026-33419?

CVE-2026-33419 has a CVSS score of 9.1 (CRITICAL severity). Vector: 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.

How do I patch CVE-2026-33419?

Patch guidance is available from minio security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-33419.

Fix CVE-2026-33419 - CRITICAL minio minio

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.

CVSS Metrics

Vector: 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
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-204 CWE-307

Metadata

Primary Vendor: MINIO
Published: 3/24/2026
Last Modified: 4/8/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-33419

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary