High severity7.7NVD Advisory· Published Mar 8, 2021· Updated Jun 17, 2026
CVE-2021-21362
CVE-2021-21362
Description
MinIO is an open-source high performance object storage service and it is API compatible with Amazon S3 cloud storage service. In MinIO before version RELEASE.2021-03-04T00-53-13Z it is possible to bypass a readOnly policy by creating a temporary 'mc share upload' URL. Everyone is impacted who uses MinIO multi-users. This is fixed in version RELEASE.2021-03-04T00-53-13Z. As a workaround, one can disable uploads with Content-Type: multipart/form-data as mentioned in the S3 API RESTObjectPOST docs by using a proxy in front of MinIO.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
12- osv-coords9 versionspkg:apk/chainguard/miniopkg:apk/wolfi/miniopkg:apk/chainguard/minio-bitnami-2024-compatpkg:apk/wolfi/minio-bitnami-2024-compatpkg:bitnami/miniopkg:apk/wolfi/minio-bitnami-2025-compatpkg:apk/chainguard/minio-bitnami-2025-compatpkg:apk/chainguard/minio-iamguarded-2025-compatpkg:apk/wolfi/minio-iamguarded-2025-compat
< 0+ 8 more
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 2021.03.04
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
- (no CPE)range: < 0
Patches
Vulnerability mechanics
References
4- github.com/minio/minio/commit/039f59b552319fcc2f83631bb421a7d4b82bc482nvdPatchThird Party Advisory
- github.com/minio/minio/pull/11682nvdExploitThird Party Advisory
- github.com/minio/minio/releases/tag/RELEASE.2021-03-04T00-53-13ZnvdRelease NotesThird Party Advisory
- github.com/minio/minio/security/advisories/GHSA-hq5j-6r98-9m8vnvdThird Party Advisory
News mentions
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