PT-2025-35455 · H2O-3 · H2O-3

Published

2025-09-01

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Updated

2025-09-02

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CVE-2025-6507

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CVSS v3.1
9.8
VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

**Name of the Vulnerable Software and Affected Versions:**

h2oai/h2o-3 versions prior to 3.46.0.8

h2oai/h2o-3 version 3.47.0.99999

**Description:**

A vulnerability in the h2oai/h2o-3 repository allows attackers to exploit deserialization of untrusted data, potentially leading to arbitrary code execution and reading of system files. This issue arises from the ability to bypass regular expression filters intended to prevent malicious parameter injection in JDBC connections. Attackers can manipulate spaces between parameters to evade detection, allowing for unauthorized file access and code execution.

**Recommendations:**

Update h2oai/h2o-3 to version 3.46.0.8 or later.

Fix

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2025-6507

Affected Products

H2O-3