CVE-2026-6176: XSS (CVSS 7.2)

Description

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.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS — Exploit Prediction

0.0026

Probability of exploitation

0.17%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.105.0/includes/reminders/class-cr-local-forms-ajax.php#L50 https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.105.0/includes/reviews/class-cr-endpoint.php#L445 https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/trunk/includes/reminders/class-cr-local-forms-ajax.php#L50 https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/trunk/includes/reviews/class-cr-endpoint.php#L445 https://plugins.trac.wordpress.org/changeset/3510305/ https://www.wordfence.com/threat-intel/vulnerabilities/id/d784afb0-03ca-48f8-ac21-230601c028a1?source=cve

Frequently Asked Questions

What is CVE-2026-6176? +

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. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2026-6176? +

CVE-2026-6176 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0026, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-6176? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-6176