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ExploitedIn CISA KEVFix available

CVE-2023-28432

Exploitation confirmed. First attested on 2023-04-21 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2023-03-22
  • Fixed in2023-03-20t20-16-18z
  • WeaknessCWE-200

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Minio is a Multi-Cloud Object Storage framework. In a cluster deployment starting with RELEASE.2019-12-17T23-16-33Z and prior to RELEASE.2023-03-20T20-16-18Z, MinIO returns all environment variables, including `MINIO_SECRET_KEY` and `MINIO_ROOT_PASSWORD`, resulting in information disclosure. All users of distributed deployment are impacted. All users are advised to upgrade to RELEASE.2023-03-20T20-16-18Z.

Timeline

dates in UTC
  1. 2023-03-2221:15CVE publishedNVD
  2. 2023-04-21Added to the CISA KEV catalogCISA KEV
  3. 2023-04-21Listed as exploited by GCVEGCVE
  4. 2023-04-21Exploitation first reportedCISA KEV
  5. 2025-01-2821:16SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-28432?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-28432?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Minio
BranchAffectedFixed in
2023.x≥ 2019-12-17t23-16-33z, < 2023-03-20t20-16-18z2023-03-20t20-16-18z
minio
BranchAffectedFixed in
2023.3≥ 2019.12.17, < 2023.03.202023.03.20

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • minio
    Affected
    • = >= RELEASE.2019-12-17T23-16-33Z, < RELEASE.2023-03-20T20-16-18Zno fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-03-27

Fix

  1. Update Minio to 2023-03-20t20-16-18z
  2. CISA’s required action: Apply updates per vendor instructions.due 2023-05-12

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
20 repositories, unverifiedMr-xn/CVE-2023-28432gobysec/CVE-2023-28432Okaytc/minio_unauth_checkMzzdToT/CVE-2023-28432acheiii/CVE-2023-28432
PoC-in-GitHub
Metasploit modules
1 moduleauxiliary/gather/minio_bootstrap_verify_info_discrank: normalModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2023-04-21
Patch Due Date
2023-05-12
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2023-03-22
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2023-28432?

Minio is a Multi-Cloud Object Storage framework. In a cluster deployment starting with RELEASE.2019-12-17T23-16-33Z and prior to RELEASE.2023-03-20T20-16-18Z, MinIO returns all environment variables, including `MINIO_SECRET_KEY` and `MINIO_ROOT_PASSWORD`, resulting in information disclosure. All users of distributed deployment are impacted. All users are advised to upgrade to RELEASE.2023-03-20T20-16-18Z.

Is CVE-2023-28432 actively exploited?

Yes. CVE-2023-28432 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2023-05-12.

What is the CVSS score for CVE-2023-28432?

CVE-2023-28432 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record