GO-2026-4970

    Dashboard / Vulnerabilities / GO-2026-4970

    GO-2026-4970

    Published: 7 Jul 2026Last Modified: 31 Aug 2026

    Summary: Root escape via symlink plus trailing slash in os

    Details: On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.

    References: https://go.dev/issue/79005, https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc, https://go.dev/cl/797880

    Affected packages

    Package

    Name: stdlib

    Purl: pkg:golang/stdlib

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.25.12

    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
    GO-2026-4970 | CVE-DB