CVE-2026-33419

CRITICAL EPSS 31.2%
Published Mar 24, 20263mo ago · Modified Jun 17, 20261w ago
9.1 CVSS 4.0
Critical
Find Similar
Published Mar 24, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

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 Details

Base Score
9.1
Exploitability
—
Impact
—
Vector string
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
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
31.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-204
CWE-307

Affected Products 1

VendorProductVersionRange
miniominio* <2026-03-17t21-25-16z

References 1

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

Remediation

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