Description
In h2oai/h2o-3 version 3.46.0, the endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This vulnerability can be exploited to overwrite any file on the target server with a trained model file, although the content of the overwrite is not controllable by the attacker.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| h2oai | h2oai/h2o-3 | unspecified – ≤ latest | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | ai.h2o:h2o-core | >= 3.32.1.1, <= 3.46.0 | — | GHSA-47f6-5p7h-5f3h |
| PyPI | h2o | >= 3.32.1.1, <= 3.46.0 | — | PYSEC-2026-1436 |