CVE-2023-1400: The Modern Events Calendar Lite WordPress plugin before 6.5.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scrip

medium Affects modern-events-calendar-lite (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published ; advisory modified .

The Modern Events Calendar Lite WordPress plugin before 6.5.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scrip

Package
modern-events-calendar-lite (WordPress plugin) WordPress
Affected versions
<6.5.2
Fixed in
6.5.2
Severity
medium  CVSS 4.8
Exploitation
not on CISA KEV · EPSS 1% (42.8th percentile)
Published
2023-03-27
Source
nvd

References

NVD recordmodern-events-calendar-lite (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden wordpress /var/www/html

# or, without Composer
pipx install phpwarden   &&   phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs   How findings are ranked

Related advisories