blogsafe.org My Downloads

BlogSafe.org

WordPress CVEs

Search and review WordPress-related vulnerability records.

← Back to CVE list

CVE-2023-4021

MEDIUM 4.8 CVSS 3.1
Published
October 20, 2023
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Description

The Modern Events Calendar lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Google API key and Calendar ID in versions up to, but not including, 7.1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Affected WordPress components

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

  • webnus/ Modern Events Calendar Lite — Before 7.1.0
  • webnus modern_events_calendar_lite — Before 7.1.0

References

  • webnus.net https://webnus.net/modern-events-calendar/change-log/ Patch
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/f213fb42-5bab-4017-80ea-ce6543031af2?source=cve Third Party Advisory
  • nvd.nist.gov Official NVD record