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CVE-2026-8751

7.3 · HIGH

A security flaw has been discovered in h2oai h2o-3 up to 7402.

Published May 17, 2026CWE-20EPSS 0.41%

Overview

CVE-2026-8751 is a high-severity vulnerability. It was published on May 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refvuldb.com/submit/810107Refvuldb.com/vuln/364378Refvuldb.com/vuln/364378/ctiRefvulnplus-note.wetolink.com/share/b5nsQg6EcsBS

How CyberStrike helps

Frequently asked questions

What is CVE-2026-8751?

CVE-2026-8751 is a high-severity vulnerability. It was published on May 17, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-8751?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-8751?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-8751?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-8751 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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