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    CVE-2026-26137

    Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a network.

    Published:Mar 19, 2026
    Last Modified:Apr 14, 2026
    EPS:Mar 19, 2026
    EPSS Score:0.00042
    CVSS Score:9.9

    Affected Products

    Vendor
    Microsoft
    Product
    365 Copilot Business Chat
    Vendor
    Microsoft
    Product
    365 Copilot Chat
    Vendor
    Microsoft
    Product
    Exchange Online

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    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