# Malicious dropper in mistralai 2.4.6 PyPI package

Advisory record · `GHSA-wx9m-wx4f-4cmg`

- **Identifiers:** `GHSA-wx9m-wx4f-4cmg`
- **State:** Confirmed
- **Severity:** CVSS 9.6 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-506](https://cwe.mitre.org/data/definitions/506.html)
- **Tags:** [CWE-506](https://agentprime.io/advisories/tag/cwe-506.md)
- **Published:** 18 May 2026
- **Updated:** 18 May 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 18 May 2026, 17:55 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.6: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `mistralai` (PyPI): affected `=2.4.6`; 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

- 9.6 Critical, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

This record came from the full history of the GitHub Advisory Database, published 18 May 2026. New records show when each source confirmed them.

## Sources

- [GitHub Advisory Database: GHSA-wx9m-wx4f-4cmg](https://github.com/advisories/GHSA-wx9m-wx4f-4cmg)
- [OSV: GHSA-wx9m-wx4f-4cmg](https://osv.dev/vulnerability/GHSA-wx9m-wx4f-4cmg)
- <https://github.com/mistralai/client-python/security/advisories/GHSA-wx9m-wx4f-4cmg>
- <https://github.com/mistralai/client-python/issues/523>
- <https://github.com/mistralai/client-python>
- <https://safedep.io/mass-npm-supply-chain-attack-tanstack-mistral>
- <https://socket.dev/blog/tanstack-npm-packages-compromised-mini-shai-hulud-supply-chain-attack>
- <https://www.stepsecurity.io/blog/mini-shai-hulud-is-back-a-self-spreading-supply-chain-attack-hits-the-npm-ecosystem>

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-wx9m-wx4f-4cmg>, 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-wx9m-wx4f-4cmg/>. Everything for agents: <https://agentprime.io/llms.txt>.