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    CVE-2021-4396

    The Rucy plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 0.4.4. This is due to missing or incorrect nonce validation on the save_rc_post_meta() function. This makes it possible for unauthenticated attackers to save post meta via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

    Published:Jul 1, 2023
    Last Modified:Apr 8, 2026
    EPS:Jul 1, 2023
    EPSS Score:0.00145
    CVSS Score:4.3

    Affected Products

    Vendor
    Rucy Project
    Product
    Rucy

    Exploits

    No exploit reference

    References

    https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
    https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
    https://plugins.trac.wordpress.org/browser/rucy/trunk/inc/class-rucy-editor.php#L237
    https://www.wordfence.com/threat-intel/vulnerabilities/id/595d0401-55b9-418e-8b99-48b23e9a2662?source=cve
    https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/
    https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/
    https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/
    https://plugins.trac.wordpress.org/browser/rucy/trunk/inc/class-rucy-editor.php#L237
    https://www.wordfence.com/threat-intel/vulnerabilities/id/595d0401-55b9-418e-8b99-48b23e9a2662?source=cve

    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