CVE-2026-3960: A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in...

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.

Ghostwire Analysis — What This Means Practically

Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
1 proof-of-concept exploit available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.
9 articles from independent security sources have covered this vulnerability, indicating significant industry attention.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

CVE-2026-3960: A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in...

Description

Ghostwire Analysis — What This Means Practically

Proof-of-Concept Exploits (1)

Security Coverage (9 articles)

References