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CVE-2021-24927

MEDIUM 5.4 CVSS 3.1
Published
November 29, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
contact@wpscan.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

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 WordPress components

  • My Calendar – Accessible Event Manager Plugin · my-calendar
    Confirmed match Active
    From 3.2.18 (including) to 3.2.18 (excluding)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown My Calendar — From 3.2.18 (including) to 3.2.18 (excluding)
  • my_calendar_project my_calendar — Before 3.2.18

References

  • wpscan.com https://wpscan.com/vulnerability/86f3acc7-8902-4215-bd75-6105d601524e Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record