GO-2026-4979

    Dashboard / Vulnerabilities / GO-2026-4979

    GO-2026-4979

    Published: 7 May 2026Last Modified: 31 Aug 2026

    Summary: Invoking "go tool pack" does not sanitize output paths in cmd/go

    Details: The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.

    References: https://go.dev/issue/78778, https://go.dev/cl/767520, https://groups.google.com/g/golang-announce/c/qcCIEXso47M

    Affected packages

    Package

    Name: toolchain

    Purl: pkg:golang/toolchain

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.25.10

    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-2026-4979 | CVE-DB