CVE-2019-14751

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    CVE-2019-14751

    Published: 22 Aug 2019Last Modified: 7 Aug 2026

    Summary:

    Details: NLTK Downloader before 3.4.5 is vulnerable to a directory traversal, allowing attackers to write arbitrary files via a ../ (dot dot slash) in an NLTK package (ZIP archive) that is mishandled during extraction.

    References: http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00054.html, http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00001.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QI4IJGLZQ5S7C5LNRNROHAO2P526XE3D/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGZSSEJH7RHH3RBUEVWWYT75QU67J7SE/, https://github.com/nltk/nltk/blob/3.4.5/ChangeLog, https://github.com/mssalvatore/CVE-2019-14751_PoC, https://github.com/nltk/nltk/commit/f59d7ed8df2e0e957f7f247fe218032abdbe9a10, https://salvatoresecurity.com/zip-slip-in-nltk-cve-2019-14751/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -acca8d573878e173379fe190d7f14f298b12dac9

    Affected versions

    3.4.4
    3.4.3
    3.4.1
    3.4

    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