CVE
CVE-2025-6544
H2O affected by a deserialization vulnerability
A deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.7, 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.
Package Versions Affected
Package Version
patch Availability
No items found.
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CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
9.8
-
3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Related Resources
No items found.
References
https://nvd.nist.gov/vuln/detail/CVE-2025-6544, https://github.com/h2oai/h2o-3/commit/0298ee348f5c73673b7b542158081e79605f5f25, https://github.com/h2oai/h2o-3, https://huntr.com/bounties/53f35a0f-d644-4f82-93aa-89fe7e0aed40, https://pypi.org/project/h2o, https://github.com/advisories/GHSA-5w3j-gwgh-4rfv