CVE-2026-6176

Customer Reviews for WooCommerce <= 5.106.0 - Unauthenticated Stored Cross-Site Scripting via Aggregated Review Form

2026-08-27 00:00
daroo

Strategic Overview

Status
Patched in 5.107.0
Affected Plugin
Customer Reviews for WooCommerce
Affected Version
<= 5.106.0
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-6176
View all Customer Reviews for WooCommerce vulnerabilities

At a glance

CVE-2026-6176 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Customer Reviews for WooCommerce WordPress plugin, affecting versions <= 5.106.0. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.107.0; sites on affected versions should update now. Disclosed August 2026, reported by daroo.

Vulnerability Overview

The Customer Reviews for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the aggregated review form submission in versions up to and including 5.106.0. This is due to insufficient input sanitization and output escaping on user-supplied review comment text. The plugin accepts review submissions from unauthenticated users through the 'cr_local_forms_submit' AJAX action without sanitizing HTML content before storing it via wp_insert_comment(), and later renders this stored content on product pages through comment_text() without proper escaping. This makes it possible for unauthenticated attackers with a valid review form URL (obtainable through review reminder emails sent to customers who placed orders) to inject arbitrary web scripts in pages that will execute whenever a user accesses the affected product 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 privileges on the target site, and no interaction from a victim user.

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

Customer Reviews for WooCommerce <= 5.106.0 carries this weakness at cr_local_forms_submit, and reaching it takes no account at all. 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 Customer Reviews for WooCommerce the fix is 5.107.0: builds <= 5.106.0 are affected, anything from 5.107.0 onward is not.

Remediation

Update to version 5.107.0, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Customer Reviews for WooCommerce 5.107.0 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-6176https://www.wordfence.com/threat-intel/vulnerabilities/id/d784afb0-03ca-48f8-ac21-230601c028a1https://nvd.nist.gov/vuln/detail/CVE-2026-6176

Related records

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