CVE-2026-8751

HIGH

h2oai h2o-3 JAR Model.java importBinaryModel deserialization

Title source: cna
STIX 2.1

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.

References (4)

Core 4
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-364378 | h2oai h2o-3 JAR Model.java importBinaryModel deserialization
https://vuldb.com/vuln/364378
Signature, Permissions Required signature permissions-required
VDB-364378 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/364378/cti
Third Party Advisory third-party-advisory
Submit #810107 | H2O-3 latest Pre-Auth Insecure Deserialization
https://vuldb.com/submit/810107

Scores

CVSS v3 7.3
EPSS 0.0041
EPSS Percentile 32.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20 CWE-502
Status published
Products (2)
h2o/h2o < 7402
h2oai/h2o-3 7402
Published May 17, 2026
Tracked Since May 17, 2026