🛡️ CVE-2024-5986
🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-73 NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE CWE-73
Public Exploit ✅ No
Source NVD
Published 2026-02-02
Updated 2026-06-02
Modified 2026-02-03
Fix URL N/A

Affected Packages

Software From version Fixed in
ai.h2o:h2o-core — —
h2o — —
unknown — —

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