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NVD / CVE Program· CNA GitHub_M

CVE-2023-28432: Minio Information Disclosure in Cluster Deployment

Noroxi assessment

Priority: Now (action score 85/100)

  • CISA has confirmed exploitation in the wild (Apr 21, 2023). Remediation deadline for US federal agencies: May 12, 2023.
  • A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
  • Probability of exploitation in the next 30 days: 83.9% (FIRST EPSS); higher than 99.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.

Patch today or shut off access. Until a fix is released, restrict access to the affected component and follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

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.

HighCVSS 7.5 · v3.1KEVWeaponized No fix recorded
Published
Mar 22, 2023
Updated
Jun 17, 2026
EPSS
83.9% · 99th percentile

Report tools

JSON

Action score

85

Now

Patch today or shut off access.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
30 / 30 · Listed
EPSS
25 / 30 · 83.9%

CISA SSVC decision

Exploitation
active
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.5
CNA · GitHub_M
7.5
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Apr 21, 2023. That signals real attacks, not theory.

Remediation deadline for US federal agencies: May 12, 2023.

Get told when this record changes

  • In CISA KEV: exploitation in the wild confirmed
  • Weaponized exploit exists
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-28432

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
miniominio

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • minio minio2019-12-17t23-16-33z and later · before 2023-03-20t20-16-18z

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • minio minio

    • >= RELEASE.2019-12-17T23-16-33Z, < RELEASE.2023-03-20T20-16-18Zaffected

Same product

minio: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-28434MinIO is vulnerable to privilege escalation on Linux/MacOSKEV
    67This week
  • CVE-2021-43858User privilege escalation in MinIO
    46Plan
  • CVE-2024-24747MinIO unsafe default: Access keys inherit `admin` of root user, allowing privilege escalation
    45Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-25812Feb 21, 2023 · Allowed DELETE on resources on object locked buckets under Governance mode in Minio
    35Monitor
  • ← EarlierCVE-2023-27589Mar 14, 2023 · Minio vulnerable to denial of access by an admin privileged user for root credential
    26Monitor
  • Later →CVE-2023-28433Mar 22, 2023 · Minio Privilege Escalation on Windows via Path separator manipulation
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×20

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2023-28432 —
Metasploit moduleauxiliary/gather/minio_bootstrap_verify_info_discMinIO Bootstrap Verify Information Disclosureauxiliary2023-03-20
Proof-of-concept repository on GitHubstars:342023-03-23
Proof-of-concept repository on GitHubstars:102023-03-23
Proof-of-concept repository on GitHubstars:72023-03-24
Proof-of-concept repository on GitHubstars:372023-03-24
Proof-of-concept repository on GitHubstars:152023-03-24
Proof-of-concept repository on GitHubstars:22023-03-27
Proof-of-concept repository on GitHubstars:102023-03-29
Proof-of-concept repository on GitHubstars:12023-04-06
Proof-of-concept repository on GitHubstars:02023-04-09
Proof-of-concept repository on GitHubstars:02023-04-13

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-3 d
  2. Published
  3. First PoCsame day
  4. CISA KEV+29 d
  5. TodayNov 6, 2026+1325 d

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

The bug in code

The whole CWE-200 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records