CVE-2026-6459

Essential Addons for Elementor <= 6.6.2 - Authenticated (Author+) Stored Cross-Site Scripting via Event Calendar Widget Popup

2026-07-07 23:38
Dmitrii Ignatyev

Strategic Overview

Status
Patched in 6.6.3
Affected Plugin
Essential Addons for Elementor – Popular Elementor Templates & Widgets
Affected Version
<= 6.6.2
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-6459
View all Essential Addons for Elementor – Popular Elementor Templates & Widgets vulnerabilities

At a glance

CVE-2026-6459 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Essential Addons for Elementor WordPress plugin, affecting versions <= 6.6.2. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 6.6.3; sites on affected versions should update now. Disclosed July 2026, reported by Dmitrii Ignatyev.

Vulnerability Overview

The Essential Addons for Elementor – Popular Elementor Templates & Widgets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Event Calendar widget in all versions up to, and including, 6.6.2 due to insufficient input sanitization and output escaping on event titles sourced from The Events Calendar. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Essential Addons for Elementor <= 6.6.2 takes an account at Author level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Essential Addons for Elementor the fix is 6.6.3: builds <= 6.6.2 are affected, anything from 6.6.3 onward is not.

Remediation

Update to version 6.6.3, or a newer patched version

How does WordSec protect against this?

An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Essential Addons for Elementor 6.6.3 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-6459https://www.wordfence.com/threat-intel/vulnerabilities/id/5b3214a5-7044-4005-a200-c969d4487be2https://nvd.nist.gov/vuln/detail/CVE-2026-6459

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C