CVE-2026-122267
HIGHCVSS 8.8/10
Last modified
CVE-2026-122267 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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..
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
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Chainguard | MinIO | <= RELEASE.2026-09-21T00-15-41Z |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is 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-bucket read.
How severe is CVE-2026-122267?
CVE-2026-122267 has a CVSS score of 8.8/10 (HIGH severity).
How do I fix CVE-2026-122267?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
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Are you affected by CVE-2026-122267?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST