---
id: CVE-2024-8019
aliases:
  - GHSA-4cv3-v7pv-rfhf
  - PYSEC-2026-3970
  - PYSEC-2026-507
title: PyTorch Lightning path traversal vulnerability
summary: PyTorch Lightning path traversal vulnerability
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'
vendor: pytorch-lightning
product: pytorch-lightning
ecosystem: pip
affected:
  - pytorch-lightning < 2.4.0
patched:
  - pytorch-lightning 2.4.0
published: '2025-03-20'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T17:25:45.422789003Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-4cv3-v7pv-rfhf'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-8019'
  - url: >-
      https://github.com/lightning-ai/pytorch-lightning/commit/330af381de88cff17515418a341cbc1f9f127f9a
  - url: 'https://github.com/pytorch/pytorch'
  - url: 'https://huntr.com/bounties/2754298b-5af5-48ef-8b38-999093ddf2bd'
  - url: 'https://pypi.org/project/pytorch-lightning'
  - url: 'https://github.com/advisories/GHSA-4cv3-v7pv-rfhf'
tags:
  - osv
  - pip
epss: 0.01122
epssPercentile: 0.6477
ingestedAt: '2026-09-12T03:13:01.652Z'
---

## Overview

In lightning-ai/pytorch-lightning version 2.3.2, a vulnerability exists in the `LightningApp` when running on a Windows host. The vulnerability occurs at the `/api/v1/upload_file/` endpoint, allowing an attacker to write or overwrite arbitrary files by providing a crafted filename. This can lead to potential remote code execution (RCE) by overwriting critical files or placing malicious files in sensitive locations.

## Affected packages

- `pytorch-lightning < 2.4.0`

## Remediation

Upgrade to a patched release:

- `pytorch-lightning 2.4.0`