VULNERABILITY INTELLIGENCE

CVE-2025-6544

CVSS score9.8 CRITICAL
EPSS probability0.92%
CISA KEVNot currently listed
Published2025-09-21
Last modified2026-10-05
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.8, allowing attackers to read arbitrary system files and execute arbitrary code. The vulnerability arises from improper handling of JDBC connection parameters, which can be exploited by bypassing regular expression checks and using double URL encoding. This issue impacts all users of the affected versions.

Weakness classification

  • CWE-502: Deserialization of Untrusted Data

Primary references