Detections
Analytics
CVE-2025-6544
critical
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.
References
https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40
https://github.com/h2oai/h2o-3/commit/0298ee348f5c73673b7b542158081e79605f5f25