Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2025-6507

Good to know:

icon

Date: September 1, 2025

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.

Severity Score

Related Resources (4)

https://github.com/h2oai/h2o-3/commit/f714edd6b8429c7a7211b779b6ec108a95b7382d
https://nvd.nist.gov/vuln/detail/CVE-2025-6507
https://huntr.com/bounties/0a9d527a-2d39-4bc0-bf01-1e717587f077
https://www.mend.io/vulnerability-database/CVE-2025-6507

Severity Score

Weakness Type (CWE)

Deserialization of Untrusted Data

CWE-502

Top Fix

icon

Upgrade Version

Upgrade to version ai.h2o:h2o-core:null;https://github.com/h2oai/h2o-3.git - null

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

Do you need more information?

Contact Us