CVE-2026-8751
criticalA security flaw has been discovered in h2oai h2o-3 up to 7402.
Vendor / product: H2o — h2o
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.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-17 12:16
Modified: 2026-10-14 20:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
h2o / h2o ≤7402
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://vuldb.com/submit/810107 cna@vuldb.com
- https://vuldb.com/vuln/364378 cna@vuldb.com
- https://vuldb.com/vuln/364378/cti cna@vuldb.com
- https://vulnplus-note.wetolink.com/share/b5nsQg6EcsBS cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗