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    CVE-2026-107162

    Express Gateway through 1.16.11 contains an authentication bypass vulnerability in the OAuth 2.0 refresh_token grant that fails to validate the token secret or issuing client. Attackers with any valid client credentials and the identifier portion of another user's refresh token can obtain that user's access token and impersonate them against oauth2-protected APIs.

    Published:Oct 7, 2026
    Last Modified:Oct 10, 2026
    EPS:Oct 7, 2026
    EPSS Score:0.00287
    CVSS Score:6.8

    Affected Products

    Vendor
    Express-gateway
    Product
    Express-gateway
    Vendor
    Express-gateway
    Product
    Express-gateway Docker Image

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

    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