CVE-2025-53002 — LLaMA-Factory Remote Code Execution (RCE) Vulnerability

2026-10-04T13:14:25.557902+00:00

Affected: hiyouga LLaMA-Factory

LLaMA-Factory is a tuning library for large language models. A remote code execution vulnerability was discovered in LLaMA-Factory versions up to and including 0.9.3 during the LLaMA-Factory training process. This vulnerability arises because the `vhead_file` is loaded without proper safeguards, allowing malicious attackers to execute arbitrary malicious code on the host system simply by passing a malicious `Checkpoint path` parameter through the `WebUI` interface. The attack is stealthy, as the victim remains unaware of the exploitation. The root cause is that the `vhead_file` argument is loaded without the secure parameter `weights_only=True`. Version 0.9.4 contains a fix for the issue.

GHSA-xj56-p8mm-qmxj — LLaMA-Factory allows Code Injection through improper vhead_file safeguards

2026-10-04T13:14:25.558057+00:00

Affected: PyPI: llamafactory

### Summary A critical remote code execution vulnerability was discovered during the Llama Factory training process. This vulnerability arises because the `vhead_file` is loaded without proper safeguards, allowing malicious attackers to execute arbitrary malicious code on the host system simply by passing a malicious `Checkpoint path` parameter through the `WebUI` interface. The attack is stealthy, as the victim remains unaware of the exploitation. The root cause is that the `vhead_file` argument is loaded without the secure parameter `weights_only=True`.

Note: In torch versions <2.6, the default setting is `weights_only=False`, and Llama Factory's `setup.py` only requires `torch>=2.0.0`.

### Affected Version

Llama Factory versions <=0.9.3 are affected by this vulnerability.

### Details

1. In LLaMA Factory's WebUI, when a user sets the `Checkpoint path`, it modifies the `adapter_name_or_path` parameter passed to the training process. code in src/llamafactory/webui/runner.py

2. The `adapter_name_or_path` passed to the training process is then used in `src/llamafactory/model/model_utils/valuehead.py` to fetch the corresponding `value_head.bin` file from Hugging Face. This file is subsequently loaded via `torch.load()` without the security parameter `weights_only=True` being set, resulting in remote code execution. code in src/llamafactory/model/model_u…

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CVE-2025-53002 — LLaMA-Factory Remote Code Execution (RCE) Vulnerability

GHSA-xj56-p8mm-qmxj — LLaMA-Factory allows Code Injection through improper vhead_file safeguards