GO-2026-4978

    Dashboard / Vulnerabilities / GO-2026-4978

    GO-2026-4978

    Published: 7 May 2026Last Modified: 31 Aug 2026

    Summary: Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go

    Details: The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

    References: https://go.dev/issue/78584, https://go.dev/cl/763882, 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-2026-4978 | CVE-DB