CVE-2023-6158: The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_up

medium Affects eventon (WordPress plugin), eventon-lite (WordPress plugin). Feed 2026.10.29.4, updated 2026-10-29; published 2024-01-10; advisory modified 2026-06-17.

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_up

Package: eventon (WordPress plugin) WordPress
Affected versions: <=4.5.4
Fixed in: no fix recorded
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 1% (46.6th percentile)
Published: 2024-01-10
Source: nvd

References

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_up

Package: eventon-lite (WordPress plugin) WordPress
Affected versions: <=2.2.7
Fixed in: no fix recorded
Severity: medium CVSS 6.5
Exploitation: not on CISA KEV · EPSS 1% (46.6th percentile)
Published: 2024-01-10
Source: nvd

References

CWE-862

NVD record eventon (WordPress plugin) advisories eventon-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.

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Related advisories

CVE-2023-2796 medium The EventON WordPress plugin before 2.1.2 lacks authentication and authorization in its ev same package: eventon (WordPress plugin)
CVE-2024-0235 medium The EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 do not ha same package: eventon (WordPress plugin)
CVE-2020-29395 medium The EventON plugin through 3.0.5 for WordPress allows addons/?q= XSS via the search field. same package: eventon (WordPress plugin)
CVE-2023-3219 medium The EventON WordPress plugin before 2.1.2 does not validate that the event_id parameter in same package: eventon (WordPress plugin)
CVE-2023-4388 medium The EventON WordPress plugin before 2.2 does not sanitise and escape some of its settings, same package: eventon (WordPress plugin)
CVE-2024-0236 medium The EventON WordPress plugin before 4.5.5, EventON WordPress plugin before 2.2.7 do not ha same package: eventon (WordPress plugin)