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    CVE-2021-47959

    WordPress Plugin WPGraphQL 1.3.5 contains a denial of service vulnerability that allows unauthenticated attackers to exhaust server resources by sending batched GraphQL queries with duplicated fields. Attackers can send POST requests to the GraphQL endpoint with amplified field duplication payloads to trigger server out-of-memory conditions and MySQL connection errors.

    Published:May 15, 2026
    Last Modified:May 15, 2026
    EPS:May 15, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    Wordpress
    Product
    Wordpress
    Vendor
    Wpengine
    Product
    Wpgraphql
    Vendor
    Wpgraphql
    Product
    Wpgraphql

    Exploits

    No exploit reference

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    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