CVE-2026-18562

HUSKY <= 1.4.3 - Reflected Cross-Site Scripting

2026-09-10 14:51
Kuba

Strategic Overview

Status
Patched in 1.4.3.1
Affected Plugin
HUSKY – Products Filter for WooCommerce Professional
Affected Version
<= 1.4.3
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-18562
View all HUSKY – Products Filter for WooCommerce Professional vulnerabilities

At a glance

CVE-2026-18562 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the HUSKY WordPress plugin, affecting versions <= 1.4.3. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.4.3.1; sites on affected versions should update now. Disclosed September 2026, reported by Kuba.

Vulnerability Overview

The HUSKY – Products Filter Professional for WooCommerce plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via SEO-friendly permalink filter URL segments in versions up to, and including, 1.4.3. This is due to insufficient input sanitization and output escaping in the wp_load_js() function, which reads filter values from the URL path via the url_request extension's parse_url_query() and embeds them into an inline JavaScript string using json_encode() without escaping single quotes. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a specially crafted link.

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 privileges on the target site.

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

HUSKY <= 1.4.3 carries this weakness at wp_load_js(), and reaching it takes a caller who can reach the endpoint. 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 HUSKY the fix is 1.4.3.1: builds <= 1.4.3 are affected, anything from 1.4.3.1 onward is not.

Remediation

Update to version 1.4.3.1, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to HUSKY: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: HUSKY 1.4.3.1 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-18562https://www.wordfence.com/threat-intel/vulnerabilities/id/dca6bd12-5adf-48fa-b24f-198f13250080https://nvd.nist.gov/vuln/detail/CVE-2026-18562

Related records

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