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    CVE-2026-18234

    The MStore API WordPress plugin before 4.21.1 does not verify that the order targeted by its wallet payment handling belongs to the requester, and does not deduct the wallet balance for most payment methods, allowing any authenticated user, including Subscribers, to mark arbitrary orders as paid without any payment being taken.

    Published:Aug 29, 2026
    Last Modified:Sep 1, 2026
    EPS:Aug 29, 2026
    EPSS Score:0.00174
    CVSS Score:6.5

    Affected Products

    Vendor
    Mstore
    Product
    Mstore Api
    Vendor
    Wordpress
    Product
    Wordpress

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-18233 (CVSS 6.5) — The MStore API WordPress plugin before 4.21.1 does not verify that the order targeted by one of its delivery …
    CVE-2026-16041 (CVSS 7.5) — The MStore API WordPress plugin before 4.21.0 does not perform authorization or purchase-ownership checks on …
    CVE-2026-16039 (CVSS 6.5) — The MStore API WordPress plugin before 4.21.0 does not restrict its vendor-orders endpoint to the caller's ow…
    CVE-2026-16038 (CVSS 9.1) — The MStore API WordPress plugin before 4.21.0 does not verify the payment with the payment gateway before mar…
    CVE-2026-16030 (CVSS 8.1) — The MStore API WordPress plugin before 4.21.0 does not correctly verify the cryptographic signature of the to…
    CVE-2021-47933 (CVSS 9.3) — WordPress MStore API 2.0.6 contains an arbitrary file upload vulnerability that allows unauthenticated attacke…

    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