CVE-2025-11821 MEDIUM

CVE-2025-11821: Woocommerce – Products By Custom Tax <= 2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Vendor Elvismdev
Product Woocommerce – Products By Custom Tax
Weakness CWE-79 · XSS
Published November 11, 2025
Last update April 8, 2026

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

The Woocommerce – Products By Custom Tax plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'woo_products_custom_tax' shortcode in all versions up to, and including, 2.2. This is due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Explanation of Vulnerability in Simple Terms

02Summary

The Woocommerce – Products By Custom Tax plugin for WordPress contains a cross-site scripting (XSS) vulnerability in versions 2.2 and earlier. An authenticated user with low privileges can inject malicious scripts that execute in other users' browsers, including site administrators. The vulnerability has scope change, meaning the impact extends beyond the vulnerable component itself.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers, potentially stealing session tokens or performing actions as those users.

Potential impact on your site

04Site Impact

Authenticated attackers can compromise admin accounts or other users' sessions through script injection, potentially leading to site takeover.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor role).

Key dates

06Disclosure timeline

November 11, 2025 CVE published
April 8, 2026 Record updated