CVE-2024-5986
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
02/02/2026
Last modified:
02/02/2026
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.
Impact
Base Score 3.x
9.10
Severity 3.x
CRITICAL