CVE-2026-76128: eCommerce Product Catalog <= 3.5.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'style' Shortcode Attribute
The eCommerce Product Catalog plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'style' Shortcode Attribute in all versions up to, and including, 3.5.10 due to insufficient input sanitization and output escaping. 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. The payload bypasses WordPress's save-time wpksespost sanitization because the malicious content is stored inside shortcode brackets with no HTML tags; the tainted HTML output is only generated at render time by the shortcode handler.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An attacker must be authenticated to the WordPress site and have Contributor-level access or higher. They can place a malicious payload in a page using the shortcode's style attribute.
When does the injected script execute?
The script executes when a user accesses a page containing the attacker-injected shortcode. The malicious HTML is generated when the shortcode is rendered rather than when the content is saved.
Are versions later than 3.5.10 affected?
The provided information identifies all versions up to and including 3.5.10 as affected. It does not state whether a later version fixes the issue.