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    CVE-2026-88997

    The JSM Show Post Metadata WordPress plugin before 4.9.1 does not properly escape a post meta key before outputting it into an inline event-handler attribute in an admin-facing meta box, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes in the session of a higher-privileged user who reviews the affected post.

    Published:Sep 23, 2026
    Last Modified:Sep 28, 2026
    EPS:Sep 23, 2026
    EPSS Score:0.00293
    CVSS Score:6.8

    Affected Products

    Vendor
    Wordpress-extensions
    Product
    Jsm Show Post Metadata

    Exploits

    https://github.com/pervinzahidli/CVE-2026-88997

    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