CVE-2025-10769: h2oai h2o-3 H2 JDBC Driver ImportSQLTable deserialization

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-09-21 · updated 2026-06-17
Weakness: CWE-20

Description

A vulnerability has been found in h2oai h2o-3 up to 3.46.08. This affects an unknown function of the file /99/ImportSQLTable of the component H2 JDBC Driver. Such manipulation of the argument connection_url leads to deserialization. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

h2oai/h2o-3: from 3.0.0.2 through 3.46.0.8

References

https://github.com/ez-lbz/poc/issues/51
https://github.com/ez-lbz/poc/issues/51#issue-3391023368
https://huntr.com/bounties/4066ce21-7148-44f5-8336-b1674c2f588d
https://vuldb.com/?ctiid.325125
https://vuldb.com/?id.325125
https://vuldb.com/?submit.649728
https://vuldb.com/?submit.649793
https://github.com/ez-lbz/poc/issues/51
https://github.com/ez-lbz/poc/issues/51#issue-3391023368
https://huntr.com/bounties/4066ce21-7148-44f5-8336-b1674c2f588d

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