CVE-2025-6544 | BDVDB-2026-294792 Detail

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.

Impact#

Weaknesses#

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Exploit#

History#

1. Version 12025-09-21Record published in the CVE List.
2. Version 22025-09-22Most recent update recorded in the CVE List.