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CVE-2021-24147

MEDIUM 5.4 CVSS 3.1
Published
March 18, 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

Unvalidated input and lack of output encoding in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not sanitise the mic_comment field (Notes on time) when adding/editing an event, allowing users with privilege as low as author to add events with a Cross-Site Scripting payload in them, which will be triggered in the frontend when viewing the event.

Affected WordPress components

  • modern-events-calendar-lite Plugin · modern-events-calendar-lite
    Confirmed match Homeless
    From 5.16.5 (including) to 5.16.5 (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 Modern Events Calendar Lite — From 5.16.5 (including) to 5.16.5 (excluding)
  • webnus modern_events_calendar_lite — Before 5.16.5

References

  • wpscan.com https://wpscan.com/vulnerability/0f9ba284-5d7e-4092-8344-c68316b0146f Exploit, Third Party Advisory
  • nvd.nist.gov Official NVD record