CVE-2026-13771 describes a stored cross-site scripting vulnerability in the Customer Reviews for WooCommerce plugin for WordPress. The flaw arises from improper neutralization of input in the 'color' shortcode attribute, allowing authenticated users with contributor or higher privileges to inject arbitrary web scripts. These scripts execute in the context of users who access the injected pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to and including 5.113.0. No official patch or remediation level has been published at this time.

An attacker with contributor-level or higher access can inject malicious scripts into pages via the vulnerable shortcode attribute. When other users access these pages, the scripts execute in their browsers, potentially leading to theft of sensitive information or unauthorized actions performed on behalf of the user. The vulnerability does not affect availability but impacts confidentiality and integrity to a limited extent.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider disabling or limiting use of the 'color' shortcode attribute in the Customer Reviews for WooCommerce plugin. Monitor official vendor channels for updates and apply patches promptly once available.