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    CVE-2026-1043

    The PostmarkApp Email Integrator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin settings in versions up to, and including, 2.4. This is due to insufficient input sanitization and output escaping on the pma_api_key and pma_sender_address parameters. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the settings page.

    Published:Feb 19, 2026
    Last Modified:Apr 15, 2026
    EPS:Feb 19, 2026
    EPSS Score:0.00043
    CVSS Score:4.4

    Affected Products

    Vendor
    Gagan0123
    Product
    Postmarkapp Email Integrator
    Vendor
    Wordpress
    Product
    Wordpress

    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