Arbitrary File Overwrite in h2oai/h2o-3
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| h2oai | h2oai/h2o-3 | up to latest | — | No fix listed | CNA |
| — | h2o (PyPI) | 3.10.4.1 – 3.46.0 | — | No fix listed | GHSA-g48v-3p35-88jr |
| — | ai.h2o:h2o-core (Maven) | 3.10.4.1 – 3.46.0 | — | No fix listed | GHSA-g48v-3p35-88jr |
- h2oai/h2o-3 Vendorh2oai Affected up to latest Fixed in — No fix listed CNA
- h2o (PyPI) Vendor— Affected 3.10.4.1 – 3.46.0 Fixed in — No fix listed GHSA-g48v-3p35-88jr
- ai.h2o:h2o-core (Maven) Vendor— Affected 3.10.4.1 – 3.46.0 Fixed in — No fix listed GHSA-g48v-3p35-88jr
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-8616
- 2026-10-03 Alias added: GHSA-g48v-3p35-88jr
References
More h2oai H2o vulnerabilities
- TI-2025-05944 Deserialization Vulnerability in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
- TI-2024-09776 Jdbc Deserialization in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
- TI-2024-30727 H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to… CVSS 3.1CRITICAL 9.1
- TI-2026-03424 Remote Code Execution in h2oai/h2o-3 CVSS 3.1CRITICAL 9.8
- TI-2023-06020 External Control of File Name or Path in h2oai/h2o-3 CVSS 3.1HIGH 8.2
- TI-2024-09794 Denial of Service and Arbitrary File Write in h2oai/h2o-3 CVSS 3.0HIGH 7.5
Sources
- CVE-2024-8616 · CVE Program
- CVE-2024-8616 · NVD
- FIRST EPSS
- GHSA-g48v-3p35-88jr · GitHub Advisory Database · CC BY 4.0
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