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Security releases

Chainguard

CVE-2026-122267: 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-buck

CVE-2026-122267 Nov 5, 2026 Source: Vendor

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.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-122267
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Credited

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CVE-2026-122267 BR2026-0000-042690 unclaimed
Credited as Oren Yomtov of Act Security