CVE-2025-6544

N/A

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.

CVE Details

CVSS v3.1 ScoreN/A

Published9/21/2025

Last Modified10/8/2025

Sourcenvd

Honeypot Sightings0

Affected Products

h2o:h2o

Weaknesses (CWE)

CWE-502

References

https://github.com/h2oai/h2o-3/commit/0298ee348f5c73673b7b542158081e79605f5f25(security@huntr.dev)

https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40(security@huntr.dev)

https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.