Vulnerability · Published Mar 20, 2025 · Assigned by @huntr_ai

CVE-2024-8616Arbitrary File Overwrite in h2oai/h2o-3

High 8.2

In plain English

A high-severity security flaw in h2oai/h2o-3 from h2oai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).

Severity (CVSS 3.0)8.2High

Exploit odds (30 days)0.6%top 53.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	ai.h2o:h2o-core	no fix listed	GHSA-g48v-3p35-88jr
PyPI	h2o	no fix listed	GHSA-g48v-3p35-88jr
PyPI	h2o	no fix listed	PYSEC-2026-1441

Affected products (as reported)

Vendor	Product	Versions
h2oai	h2oai/h2o-3	unspecified – through latest

Weakness: CWE-73 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References

https://huntr.com/bounties/aebf69a5-b9b1-4d2f-a8ff-902c11a8c97a