CVE-2026-8751 MEDIUM

CVE-2026-8751: h2oai h2o-3 JAR Model.java importBinaryModel deserialization

Vendor H2Oai
Product h2o-3
Weakness CWE-502 · Unsafe deserialization
Published May 17, 2026
Last update May 18, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

Description

A security flaw has been discovered in h2oai h2o-3 up to 7402. This affects the function importBinaryModel of the file h2o-core/src/main/java/hex/Model.java of the component JAR Handler. Performing a manipulation results in deserialization. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

Disclosure timeline

May 17, 2026 CVE published
May 18, 2026 Record updated