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    CVE-2026-53947

    Ghost is a Node.js content management system. From 5.18.0 until 6.21.1, a discrepancy in responses from the members signin endpoints made it possible for an unauthenticated attacker to determine whether a given email address belongs to a registered member of a Ghost site. This vulnerability is fixed in 6.21.1.

    Published:Jun 24, 2026
    Last Modified:Jun 25, 2026
    EPS:Jun 24, 2026
    EPSS Score:0.00206
    CVSS Score:5.3

    Affected Products

    Vendor
    Ghost
    Product
    Ghost

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-204 Observable Response Discrepancy

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    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