# GHSA-2pc9-4j83-qjmr: vLLM affected by RCE via auto_map dynamic module loading during model initialization

## Description
# Summary

vLLM loads Hugging Face `auto_map` dynamic modules during model resolution **without gating on `trust_remote_code`**, allowing attacker-controlled Python code in a model repo/path to execute at server startup.

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# Impact

An attacker who can influence the model repo/path (local directory or remote Hugging Face repo) can achieve **arbitrary code execution** on the vLLM host during model load.  
This happens **before any request handling** and does **not require API access**.

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# Affected Versions

All versions where `vllm/model_executor/models/registry.py` resolves `auto_map` entries with `try_get_class_from_dynamic_module` **without checking `trust_remote_code`** (at least current `main`).

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# Details

During model resolution, vLLM unconditionally iterates `auto_map` entries from the model config and calls `try_get_class_from_dynamic_module`, which delegates to Transformers’ `get_class_from_dynamic_module` and **executes the module code**.

This occurs even when `trust_remote_code` is `false`, allowing a malicious model repo to embed code in a referenced module and have it executed during initialization.

### Relevant code

- `vllm/model_executor/models/registry.py:856` — auto_map resolution  
- `vllm/transformers_utils/dynamic_module.py:13` — delegates to `get_class_from_dynamic_module`, which executes code

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# Fixes

* https://github.com/vllm-project/vllm/pull/32194

# Credits

Reported by **bugbunny.ai**

## Severity
- **CVSS Score:** 8.8
- **CVSS Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- **Severity:** HIGH

## Affected Packages
- **vllm** (pip)
  - Vulnerable: >= 0.10.1, < 0.14.0
  - Fixed in: 0.14.0

## References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-2pc9-4j83-qjmr
- https://github.com/vllm-project/vllm/pull/32194
- https://github.com/vllm-project/vllm/commit/78d13ea9de4b1ce5e4d8a5af9738fea71fb024e5
- https://github.com/vllm-project/vllm/releases/tag/v0.14.0
- https://github.com/advisories/GHSA-2pc9-4j83-qjmr

## Reproduction Steps

To be determined by the reproduction agent.