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    CVE-2026-17106

    The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extractor decides where each archive entry lands using lexical string checks and then performs the filesystem operation on a path that is resolved by the OS, so links introduced by the archive can be followed out of the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.

    Published:Aug 18, 2026
    Last Modified:Aug 28, 2026
    EPS:Aug 18, 2026
    EPSS Score:0.00325
    CVSS Score:7.8

    Affected Products

    Vendor
    Docker
    Product
    Desktop
    Vendor
    Docker
    Product
    Docker Cli
    Vendor
    Docker
    Product
    Docker Compose
    Vendor
    Docker
    Product
    Docker Engine
    Vendor
    Docker
    Product
    Docker Sandboxes
    Vendor
    Docker
    Product
    Sandboxes
    Vendor
    Moby
    Product
    Go-archive

    Exploits

    https://github.com/686f6c61/POC-CopyEscape-CVE-2026-17106https://github.com/HackSpeak/CVE-2026-17106https://github.com/masasron/CopyEscape-CVE-2026-17106

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    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