# H2O Vulnerable to Arbitrary File Overwrite

Advisory record · `GHSA-g48v-3p35-88jr`

- **Identifiers:** `GHSA-g48v-3p35-88jr` · `CVE-2024-8616` · `PYSEC-2026-1441`
- **State:** Confirmed
- **Severity:** CVSS 8.2 High
- **Critical:** No
- **Weakness (CWE):** [CWE-73](https://cwe.mitre.org/data/definitions/73.html)
- **Tags:** [Path traversal](https://agentprime.io/advisories/tag/path-traversal.md)
- **Published:** 20 Mar 2025
- **Updated:** 7 Jul 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 20 Mar 2025, 12:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `h2o` (PyPI): affected `>=3.10.4.1, <=3.46.0`; no fixed version yet
- `ai.h2o:h2o-core` (Maven): affected `>=3.10.4.1, <=3.46.0`; no fixed version yet

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 8.2 High, CVSS 3.0: `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H`, from CNA (@huntr_ai)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0056, the 47th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:20 UTC: First seen by agentprime
- 31 Oct 2026, 14:20 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-g48v-3p35-88jr)

## Sources

- [GitHub Advisory Database: GHSA-g48v-3p35-88jr](https://github.com/advisories/GHSA-g48v-3p35-88jr)
- [OSV: GHSA-g48v-3p35-88jr](https://osv.dev/vulnerability/GHSA-g48v-3p35-88jr)
- <https://nvd.nist.gov/vuln/detail/CVE-2024-8616>
- <https://github.com/h2oai/h2o-3>
- <https://github.com/h2oai/h2o-3/blob/088190f9d0370a02a483fca68d8dc89c996b4f83/h2o-core/src/main/java/water/api/ModelsHandler.java#L310>
- <https://huntr.com/bounties/aebf69a5-b9b1-4d2f-a8ff-902c11a8c97a>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-g48v-3p35-88jr>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-g48v-3p35-88jr/>. Everything for agents: <https://agentprime.io/llms.txt>.