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    CVE-2026-86823

    The Newsletter WordPress plugin before 9.3.7 does not validate the destination of the redirect performed after a public subscription action, allowing unauthenticated attackers to redirect users to arbitrary external sites and to disclose a subscriber token that grants access to that subscriber record's front-end actions.

    Published:Sep 16, 2026
    Last Modified:Sep 18, 2026
    EPS:Sep 16, 2026
    EPSS Score:0.00254
    CVSS Score:5.3

    Affected Products

    Vendor
    Newsletter
    Product
    Newsletter
    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    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