Answer in brief
CVE-2023-28434 records a High severity (CVSS 8.8) vulnerability in MinIO is vulnerable to privilege escalation on Linux/MacOS. The current sources mark it as known exploited. The current feed maps minio/minio (generic), github.com/minio/minio (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps minio/minio (generic), github.com/minio/minio (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| minio/miniogeneric | <RELEASE.2023-03-20T20-16-18Z | RELEASE.2023-03-20T20-16-18Z |
| github.com/minio/miniogo | >=0 <0.0.0-202303200415 | 0.0.0-202303200415 |
Published upstream
Mar 22, 2023
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Sep 19, 2023
Evidence: source:kev:kev:kev:recordMinio 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`.
Quoted source text, attributed separately from HOL analysis.