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CVE-2026-122267 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
CNA: 82cea9a6-e9e3-46fe-bdb0-3673de380178CVSS-B:8.8 HIGHVector:CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/chainguard-forks/minio/security/advisories/GHSA-48rv-pgqh-mhjg | 82cea9a6-e9e3-46fe-bdb0-3673de380178 |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-347 | Improper Verification of Cryptographic Signature | 82cea9a6-e9e3-46fe-bdb0-3673de380178 |
Affected Products
No affected product data is available for this CVE.
Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 5, 2026 | New CVE Received | 82cea9a6-e9e3-46fe-bdb0-3673de380178 |