【中文导读】该 CVE 涉及反序列化（严重风险）。具体受影响产品、版本和修复方案以 NVD/厂商公告为准。 【原始描述】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.