Advisory Published

CVE-2021-24927: XSS

First published: Mon Nov 29 2021(Updated: )

The My Calendar WordPress plugin before 3.2.18 does not sanitise and escape the callback parameter of the mc_post_lookup AJAX action (available to any authenticated user) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue


Affected SoftwareAffected VersionHow to fix
My Calendar Project My Calendar<3.2.18

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Frequently Asked Questions

  • What is the vulnerability ID of this issue?

    The vulnerability ID of this issue is CVE-2021-24927.

  • What is the severity of CVE-2021-24927?

    The severity of CVE-2021-24927 is medium.

  • How does CVE-2021-24927 affect the My Calendar WordPress plugin?

    CVE-2021-24927 affects the My Calendar WordPress plugin before version 3.2.18.

  • What is the impact of CVE-2021-24927?

    CVE-2021-24927 can lead to a Reflected Cross-Site Scripting issue.

  • How can I fix CVE-2021-24927?

    To fix CVE-2021-24927, update your My Calendar WordPress plugin to version 3.2.18 or higher.


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