What’s Vulnerable › Vulnerabilities

CVE-2023-4423: WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce <= 3.1.37.1 - Authenticated (Admin+) Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-09-27 · updated 2026-06-17
• Weakness: CWE-79

Description

The WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in versions up to, and including, 3.1.37.1 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 products

• wpeventmanager WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce: before 3.1.38 — fixed in 3.1.38

How to fix

Upgrade to a fixed version: wpeventmanager WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce 3.1.38. Check the vendor advisory for mitigations.

References

• https://github.com/Jacky-Y/vuls/blob/main/vul5.md
• https://github.com/wpeventmanager/wp-event-manager/issues/1483
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2969034%40wp-event-manager%2Ftrunk&old=2953169%40wp-event-manager%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/dd9d22b0-a84a-4bf2-b8b4-89bae2970f29?source=cve
• https://github.com/Jacky-Y/vuls/blob/main/vul5.md
• https://github.com/wpeventmanager/wp-event-manager/issues/1483
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2969034%40wp-event-manager%2Ftrunk&old=2953169%40wp-event-manager%2Ftrunk&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/dd9d22b0-a84a-4bf2-b8b4-89bae2970f29?source=cve

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