{"schema":"threatline.record/2","record":{"id":"CVE-2023-28434","aliases":["GHSA-2pxw-r47w-4p8c"],"summary":"MinIO Security Feature Bypass Vulnerability","details":"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.","categories":["Libraries & packages"],"product":"MinIO","vendor":"MinIO","ecosystem":"Go","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2023-28434","source_modified_at":"2025-10-21T23:15:22.302Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"minio","vendor":"minio","versions":[{"version":"< RELEASE.2023-03-20T20-16-18Z","status":"affected"}],"defaultStatus":null},{"source":"GitHub Advisory Database","source_url":"https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c","source_modified_at":"2023-03-21T13:31:34Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"go","name":"minio"},"range":"all"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2pxw-r47w-4p8c","source_modified_at":"2026-10-08T08:11:01.963531191Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"github.com/minio/minio","ecosystem":"Go","purl":"pkg:golang/github.com/minio/minio"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-202303200415"}]}],"versions":[]}],"fixed_versions":[{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-2pxw-r47w-4p8c","source_modified_at":"2026-10-08T08:11:01.963531191Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"github.com/minio/minio","ecosystem":"Go","purl":"pkg:golang/github.com/minio/minio"},"version":"0.0.0-202303200415"}],"cvss":8.8,"severity":"High","kev":{"listed":true,"date_added":"2023-09-19","due_date":"2023-10-10","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.07917,"percentile":0.9472,"score_date":"2026-10-23"},"published_at":"2023-03-22T20:44:04.216Z","modified_at":"2026-10-08T08:11:01.963531191Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2023-28434","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:15:22.302Z"},{"source":"GitHub Advisory Database","url":"https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2023-03-21T13:31:34Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-2pxw-r47w-4p8c","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-08T08:11:01.963531191Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2023-28434","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","GitHub Advisory Database","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/minio/minio/security/advisories/GHSA-2pxw-r47w-4p8c","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28434","source":"CISA KEV"},{"source":"CVE List","url":"https://github.com/minio/minio/pull/16849","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://github.com/minio/minio/commit/67f4ba154a27a1b06e48bfabda38355a010dfca5","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-28434","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2025-01-28T21:17:47.891249Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-08T08:11:01.963531191Z","content_hash":"dbd788a506e73dc7394580ae4858b442e6973b54f3069bb476000bd4dfafafd2"}}