{"identifier":"CVE-2023-28434","cve":{"id":"CVE-2023-28434","description":"Minio is a Multi-Cloud Object Storage framework. Prior to RELEASE.2023-03-20T20-16-18Z, an attacker can use crafted requests to bypass metadata bucket name checking and put an object into any bucket while processing `PostPolicyBucket`. To carry out this attack, the attacker requires credentials with `arn:aws:s3:::*` permission, as well as enabled Console API access. This issue has been patched in RELEASE.2023-03-20T20-16-18Z. As a workaround, enable browser API access and turn off `MINIO_BROWSER=off`.","published":"2023-03-22T21:15:18.427000+00:00","modified":"2026-06-17T05:47:43.610000+00:00","status":"Analyzed","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:a:minio:minio:*:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"2023-03-20t20-16-18z"}],"weaknesses":["CWE-269","NVD-CWE-noinfo"],"references":[{"url":"https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/minio/minio/pull/16849","source":"security-advisories@github.com","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c","source":"security-advisories@github.com","tags":["Vendor Advisory"]},{"url":"https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://github.com/minio/minio/pull/16849","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":["US Government Resource"]}],"kev":{"cveID":"CVE-2023-28434","vendorProject":"MinIO","product":"MinIO","vulnerabilityName":"MinIO Security Feature Bypass Vulnerability","dateAdded":"2023-09-19","shortDescription":"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. 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