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    CVE-2025-22873

    It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.

    Published:Feb 4, 2026
    Last Modified:Feb 10, 2026
    EPS:Feb 4, 2026
    EPSS Score:0.00004
    CVSS Score:3.8

    Affected Products

    Vendor
    Go Standard Library
    Product
    Os
    Vendor
    Golang
    Product
    Go

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-23 Relative Path Traversal

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-139 Relative Path Traversal
    CAPEC-76 Manipulating Web Input to File System Calls

    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