CVE-2024-5986 - Remote Arbitrary File Write with Arbitrary Data in h2oai/h2o-3

CVE ID : CVE-2024-5986 Published : Feb. 2, 2026, 11:16 a.m. | 57 minutes ago 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. Severity: 9.1 | CRITICAL Visit the link for more details, such as CVSS details, affected products, timeline, and more...