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h2o-3 CVE-2026-8750

| EUVD-2026-30694 MEDIUM
Information Exposure (CWE-200)
2026-05-17 VulDB GHSA-2g37-rjvj-534q
5.5
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
May 17, 2026 - 11:30 vuln.today
CVSS changed
May 17, 2026 - 11:22 NVD
5.3 (MEDIUM) 5.5 (MEDIUM)

DescriptionNVD

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.

AnalysisAI

Information disclosure in h2oai h2o-3 through version 7402 allows remote unauthenticated attackers to read arbitrary files from the server filesystem via the ImportFile API endpoint. The vulnerability resides in the importFiles function of PersistNFS.java and is confirmed actively exploited with publicly available exploit code (CVSS:4.0 E:P). …

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CVE-2026-8750 vulnerability details – vuln.today

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