CVE-2023-4423 MEDIUM

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

Vendor Wpeventmanager
Product WP Event Manager – Events Calendar, Registrations, Sell Tickets with WooCommerce
Weakness CWE-79 · XSS
Published September 27, 2023
Last update April 8, 2026

CVSS base score

4.4/10
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

WP Event Manager versions up to 3.1.37.1 contain a stored cross-site scripting (XSS) vulnerability. An authenticated administrator can inject malicious scripts into the plugin that execute in other users' browsers. The vulnerability requires high-level privileges and network access but can affect the confidentiality and integrity of site data across different security contexts.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that execute in other users' browsers when they view affected pages.

Potential impact on your site

04Site Impact

A compromised admin account can inject persistent malicious code affecting all site visitors and other administrators.

Conditions required to exploit

05Prerequisites

Attacker must have administrator-level access to the WordPress site.

Key dates

06Disclosure timeline

September 27, 2023 CVE published
April 8, 2026 Record updated

Related vulnerabilities

08Related CVE