CVE-2026-110903
Deferred Deferred - Pending Action

Stored XSS in The Events Calendar Plugin

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Patchstack

Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP The Events Calendar the-events-calendar allows Stored XSS.This issue affects The Events Calendar: from n/a through 6.18.1.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-110903
EUVD
EUVD-2026-102864

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Liquid Web / StellarWP The Events Calendar 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the WordPress plugin The Events Calendar by Liquid Web / StellarWP. It allows attackers to inject malicious scripts into web pages that are then executed when other users view the page. The vulnerability exists due to improper neutralization of user input during web page generation.

Detection Guidance

Detecting this vulnerability requires checking the installed version of The Events Calendar plugin. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files in /wp-content/plugins/the-events-calendar/ to verify if the version is 6.18.1 or below.

Impact Analysis

Attackers could exploit this to steal visitor data, hijack user accounts, or perform unauthorized actions on behalf of users. Successful exploitation requires user interaction, such as clicking a malicious link or submitting a form. The impact includes potential data breaches and compromised user sessions.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements for data protection and security. Organizations may face compliance penalties, legal liabilities, and reputational damage if exploited.

Mitigation Strategies

Immediately update The Events Calendar plugin to version 6.18.2 or later. If updating is not possible, consider disabling the plugin temporarily or seek assistance from your hosting provider or web developer.

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