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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 affects the latest master branch version 3.47.0.99999. The vulnerability 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. The vulnerability is addressed in version 3.46.0.8.

PUBLISHED Reserved 2025-06-23 | Published 2025-09-01 | Updated 2025-09-02 | Assigner @huntr_ai




CRITICAL: 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-502 Deserialization of Untrusted Data

Product status

Any version before 3.46.0.8
affected

References

huntr.com/bounties/0a9d527a-2d39-4bc0-bf01-1e717587f077

github.com/...ommit/f714edd6b8429c7a7211b779b6ec108a95b7382d

cve.org (CVE-2025-6507)

nvd.nist.gov (CVE-2025-6507)

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