CVE-2023-6016Network attack vector

Unauthenticated code execution via POJO model import

Published Nov 16, 2023 · Updated Aug 2, 2024

Code injection in H2O.ai H2O-3 before 3.46.0.1 allows remote attackers to execute arbitrary code through POJO model import. The public record does not disclose the exact import handler or the operation that converts an uploaded POJO into executable server-side code. The dashboard must be network-reachable with POJO import enabled; successful exploitation runs code in the server process context.

CVSS severity10.0
Critical
EPSS probability30.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in H2O.ai H2O-3 before 3.46.0.1 allows remote attackers to execute arbitrary code through POJO model import. The public record does not disclose the exact import handler or the operation that converts an uploaded POJO into executable server-side code. The dashboard must be network-reachable with POJO import enabled; successful exploitation runs code in the server process context.

The record

CVE
CVE-2023-6016
Published
Nov 16, 2023
Updated
Aug 2, 2024
Vendor
H2O.ai
Product
H2O-3
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=latest

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

H2O.ai · H2O-3version=unspecified <=latest

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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