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CVE-2026-8750— h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure

Quick assessment

Affected
h2oai h2o-3
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

H2O是H2O.ai开源的一个用于分布式、可扩展机器学习的内存平台。 H2O 7402及之前版本存在信息泄露漏洞，该漏洞源于ImportFile API组件中PersistNFS.java文件的importFiles函数存在信息泄露。攻击者可能远程利用此漏洞。

CVSS 5.3 · Medium EPSS 0.68% · P51

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
h2oai h2o-3 7402 affected
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I. Basic Information for CVE-2026-8750

Vulnerability Information
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Vulnerability Title
h2oai h2o-3 ImportFile API PersistNFS.java importFiles information disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in h2oai h2o-3 up to 7402. Affected by this issue is the function importFiles of the file h2o-core/src/main/java/water/persist/PersistNFS.java of the component ImportFile API. Such manipulation leads to information disclosure. The attack can be executed remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
H2O 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
H2O是H2O.ai开源的一个用于分布式、可扩展机器学习的内存平台。 H2O 7402及之前版本存在信息泄露漏洞，该漏洞源于ImportFile API组件中PersistNFS.java文件的importFiles函数存在信息泄露。攻击者可能远程利用此漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
h2oai h2o-3 7402 cpe:2.3:a:h2oai:h2o-3:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-8750

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III. Intelligence Information for CVE-2026-8750

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Other References for CVE-2026-8750 (1)

Same Patch Batch · h2oai · 2026-05-17 · 3 CVEs total

CVE-2026-8751 7.3 HIGH h2oai h2o-3 JAR Model.java importBinaryModel deserialization
CVE-2026-8752 5.3 MEDIUM h2oai h2o-3 Rapids setproperty Primitive AstSetProperty.java exec access control

IV. Related Vulnerabilities

Same product: h2o-3
Same vendor: h2oai
Same weakness: CWE-200

V. Comments for CVE-2026-8750

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