GO-2025-3750

    Dashboard / Vulnerabilities / GO-2025-3750

    GO-2025-3750

    Published: 11 Jun 2025Last Modified: 4 Feb 2026

    Summary: Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall

    Details: os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.

    References: https://go.dev/cl/672396, https://go.dev/issue/73702, https://groups.google.com/g/golang-announce/c/ufZ8WpEsA3A

    Affected packages

    Package

    Name: stdlib

    Purl: pkg:golang/stdlib

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.23.10

    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-2025-3750 | CVE-DB