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    CVE-2026-21520

    Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector

    Published:Jan 22, 2026
    Last Modified:Apr 16, 2026
    EPS:Jan 22, 2026
    EPSS Score:0.00091
    CVSS Score:7.5

    Affected Products

    Vendor
    Microsoft
    Product
    Copilot Studio

    Exploits

    No exploit reference

    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