CVE-2026-8751CRITICAL 9.8EPSS p32.5%

CVE-2026-8751CVE-2026-8751

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.41% probability of exploitation · percentile 32.5% · 2026-06-19T12:03:05Z
Published2026-05-17
Last modified2026-05-19

Underlying weaknesses· 2

CWE-20CWE-502

References

  1. https://vuldb.com/submit/810107
  2. https://vuldb.com/vuln/364378
  3. https://vuldb.com/vuln/364378/cti
  4. https://vulnplus-note.wetolink.com/share/b5nsQg6EcsBS

2

TypeTargetConfidenceTier
WeaknessImproper Input Validationcwe-200%live
WeaknessDeserialization of Untrusted Datacwe-5020%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.