{"id":"CVE-2023-28433","aliases":["BIT-minio-2023-28433","GHSA-w23q-4hw3-2pp6"],"url":"https://o3.security/vulnerability/CVE-2023-28433","summary":"Minio Privilege Escalation on Windows via Path separator manipulation","details":"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":"2023-03-22T20:33:43.452Z","modified":"2026-08-12T03:51:30.705805848Z","cvss":{"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"},"epss":{"score":0.00981,"percentile":0.60592,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/minio/minio","fixedVersion":"0.0.0-202303200735"}],"fix":{"url":"https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8","label":"minio/minio@8d6558b"},"references":[{"type":"WEB","url":"https://github.com/minio/minio/releases/tag/RELEASE.2023-03-20T20-16-18Z"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28433.json"},{"type":"ADVISORY","url":"https://github.com/minio/minio/security/advisories/GHSA-w23q-4hw3-2pp6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28433"},{"type":"FIX","url":"https://github.com/minio/minio/commit/8d6558b23649f613414c8527b58973fbdfa4d1b8"},{"type":"FIX","url":"https://github.com/minio/minio/commit/b3c54ec81e0a06392abfb3a1ffcdc80c6fbf6ebc"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:30.705805848Z"}}