BIT-docker-cli-2026-17106

    Dashboard / Vulnerabilities / BIT-docker-cli-2026-17106

    BIT-docker-cli-2026-17106

    Published: 24 Aug 2026Last Modified: 24 Aug 2026

    Summary: Tar extraction in moby/go-archive can write outside the destination directory via link following

    Details: 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.

    References: https://docs.docker.com/desktop/release-notes/#4860, https://docs.docker.com/engine/release-notes/29/#2970, https://github.com/docker/cli/releases/tag/v29.7.0, https://github.com/docker/compose/releases/tag/v5.4.0, https://github.com/docker/sbx-releases/releases/tag/v0.38.0, https://github.com/masasron/CopyEscape-CVE-2026-17106, https://github.com/moby/go-archive/releases/tag/v0.3.0, https://github.com/moby/go-archive/security/advisories/GHSA-hfg8-hc9c-6c3h, https://nvd.nist.gov/vuln/detail/CVE-2026-17106

    Affected packages

    Package

    Name: docker-cli

    Purl: pkg:bitnami/docker-cli

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -29.7.0

    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