CVE-2026-15787

Ultimate Addons for Elementor <= 2.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Navigation Menu Widget data-toggle-icon/data-close-icon Attributes

2026-07-21 20:13
Asaf Mozes

Strategic Overview

Status
Patched in 2.9.2
Affected Plugin
Ultimate Addons for Elementor – Widgets, Templates, WooCommerce & Header Footer Builder
Affected Version
<= 2.9.1
CVSS
6.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-15787
View all Ultimate Addons for Elementor – Widgets, Templates, WooCommerce & Header Footer Builder vulnerabilities

At a glance

CVE-2026-15787 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Ultimate Addons for Elementor WordPress plugin, affecting versions <= 2.9.1. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 2.9.2; sites on affected versions should update now. Disclosed July 2026, reported by Asaf Mozes.

Vulnerability Overview

The Ultimate Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Navigation Menu Widget data-toggle-icon/data-close-icon Attributes in all versions up to, and including, 2.9.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. wp_kses_post, applied on save for users without unfiltered_html, does not neutralize HTML-entity-encoded payloads stored inside data-* attributes on kses-allowed elements, as the browser decodes these values client-side before jQuery .html() renders them as markup.

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')

Ultimate Addons for Elementor <= 2.9.1 carries this weakness at html(), and reaching it takes an account at Contributor 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 Ultimate Addons for Elementor the fix is 2.9.2: builds <= 2.9.1 are affected, anything from 2.9.2 onward is not.

Remediation

Update to version 2.9.2, or a newer patched version

How does WordSec protect against this?

An attacker needs Contributor 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: Ultimate Addons for Elementor 2.9.2 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-15787https://www.wordfence.com/threat-intel/vulnerabilities/id/39f26d35-a702-49fc-aed1-0a329ac32553https://nvd.nist.gov/vuln/detail/CVE-2026-15787

Related records

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