CVE-2026-122267
Received Received - Intake

MinIO Signature V4 Header Manipulation Vulnerability

Publication date: 2026-11-05

Last updated on: 2026-11-05

Assigner: chainguard

Description
MinIO Signature V4 verification before RELEASE.2026-09-22T19-25-18Z accepts unsigned x-amz-* headers, letting a presigned PUT URL be escalated into a cross-bucket read.

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Meta Information

Published
2026-11-05
Last Modified
2026-11-05
Generated
2026-11-06
EPSS Evaluated
N/A
NVD
CVE-2026-122267

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Chainguard MinIO 0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-347 The product does not verify, or incorrectly verifies, the cryptographic signature for data.

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