In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.
CVE ID: CVE-2024-8616
CVSS Base Severity: HIGH
CVSS Base Score: 8.2
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Vendor: h2oai
Product: h2oai/h2o-3
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 16.43% (scored less or equal to compared to others)
EPSS Date: 2025-04-18 (when was this score calculated)