{"id":"CVE-2023-28433","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-28433","generatedAt":"2026-10-28T04:33:11.702Z","title":"MinIO fails to filter the `\\` character, which allows for arbitrary object placement across buckets.","description":"Minio is a Multi-Cloud Object Storage framework. All users on Windows prior to version RELEASE.2023-03-20T20-16-18Z are impacted. MinIO fails to filter the `\\` character, which allows for arbitrary object placement across buckets. As a result, a user with low privileges, such as an access key, service account, or STS credential, which only has permission to `PutObject` in a specific bucket, can create an admin user. This issue is patched in RELEASE.2023-03-20T20-16-18Z. There are no known workarounds.","published":"2023-03-22T21:15:18.000Z","lastModified":"2026-06-17T05:47:42.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","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"},"cwe":["CWE-668"],"affected":["minio/minio"],"epss":{"score":0.00981,"percentile":0.62079,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebc","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18Z","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6","tags":["Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebc","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18Z","tags":["Release Notes"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-28433","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}