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CVE-2026-3960PYSEC-2026-2180GHSA-QMCV-HH7C-3M56

Remote Code Execution in h2oai/h2o-3

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.46.0.10
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in H2O-3 version 3.46.0.9 and prior. The vulnerability arises due to insufficient security controls in the parameter blacklist mechanism, which only targets MySQL JDBC driver-specific dangerous parameters. An attacker can bypass these controls by switching the JDBC URL protocol to jdbc:postgresql: and exploiting PostgreSQL JDBC driver-specific parameters such as socketFactory and socketFactoryArg. This allows unauthenticated attackers to execute arbitrary code on the H2O-3 server with the privileges of the H2O-3 process. The issue is resolved in version 3.46.0.10.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • h2oai h2oai/h2o-3

    fixed in 3.46.0.10

  • h2oPyPI

    fixed in 3.46.0.10

  • ai.h2o:h2o-coreMaven

    fixed in 3.46.0.10

References 2

huntr.com

GitHub · h2oai/h2o-3