CVE-2023-28434CISA KEVEPSS p93.1%

CVE-2023-28434MinIO Security Feature Bypass Vulnerability

MinIO / MinIO

Description

MinIO contains a security feature bypass vulnerability that allows an attacker to use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket` to conduct privilege escalation. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access.

Scoring

EPSS6.74% probability of exploitation · percentile 93.1% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2023-09-19

(incoming)1

TypeTargetConfidenceTier
KEVEntryMinIO Security Feature Bypass Vulnerabilitykev-cve-2023-284340%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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CVE-2026-40344
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CVE-2026-33322
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CVE-2026-41145
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CVE-2025-62506
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MinIO Information Disclosure Vulnerability
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CVE-2026-45043
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.