PyTorch Lightning path traversal vulnerability
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | lightning | < 2.4.0 | 2.4.0 |
| Python (PyPI) | pytorch-lightning | < 2.4.0 | 2.4.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-8019
- https://github.com/lightning-ai/pytorch-lightning/commit/330af381de88cff17515418a341cbc1f9f127f9a
- https://github.com/pytorch/pytorch
- https://huntr.com/bounties/2754298b-5af5-48ef-8b38-999093ddf2bd
- https://pypi.org/project/pytorch-lightning
- https://github.com/advisories/GHSA-4cv3-v7pv-rfhf
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- Python (PyPI)
- Package
lightning, pytorch-lightning- Disclosed
- 20.03.2025
- Updated
- 11.10.2026 15:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2026-3970 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-4cv3-v7pv-rfhf - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-507 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: pytorch-lightning
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 9
- First → latest
- 12.2021 07.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 5
- High 4
Disclosures per year
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 2
- 2025: 2
- 2026: 3
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PyTorch Lightning path traversal vulnerability this entry
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