PYSEC-2026-507

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    PYSEC-2026-507

    Published: 29 Jun 2026Last Modified: 10 Sept 2026

    Summary: PyTorch Lightning path traversal vulnerability

    Details: 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.

    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

    Affected packages

    Package

    Name: pytorch-lightning

    Purl: pkg:pypi/pytorch-lightning

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.4.0

    Affected versions

    0.0.2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High