CVE-2026-3960 (GCVE-0-2026-3960)

Vulnerability from cvelistv5 – Published: 2026-04-23 08:47 – Updated: 2026-04-23 12:29
VLAI
Title
Remote Code Execution in h2oai/h2o-3
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.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-23 12:25 UTC
CWE
  • CWE-94 - Improper Control of Generation of Code
Assigner
@huntr_ai CNA under the mitre root
CNA scorecard C 65/100 over 41 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
h2oai h2oai/h2o-3 Affected: unspecified , < 3.46.0.10 (custom)
guessed Create a notification for this product.
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