CVE-2021-21706

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    CVE-2021-21706

    Published: 4 Oct 2021Last Modified: 7 Aug 2026

    Summary:

    Details: In PHP versions 7.3.x below 7.3.31, 7.4.x below 7.4.24 and 8.0.x below 8.0.11, in Microsoft Windows environment, ZipArchive::extractTo may be tricked into writing a file outside target directory when extracting a ZIP file, thus potentially causing files to be created or overwritten, subject to OS permissions.

    References: https://security.netapp.com/advisory/ntap-20211029-0007/, https://bugs.php.net/bug.php?id=81420

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 52ace952a1b65ca80fc2617f11c2fa6dd03f51bd
    Fixed -b54c8f052134668b13c4a3177f16b08d82233ade

    Affected versions

    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