What the vulnerability does
01Description
The WCFM Marketplace – Multivendor Marketplace for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Attachment 'post_title' in all versions up to, and including, 3.7.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Vendor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. An attacker can plant the payload by uploading a media attachment with a crafted title via the WordPress REST API (/wp-json/wp/v2/media), without ever invoking the AJAX endpoint themselves, as the unescaped title is later emitted inside DataTables JSON and inserted as innerHTML upon any privileged user loading the media dashboard.
Explanation of Vulnerability in Simple Terms
02Summary
WCFM Marketplace versions up to 3.7.3 contain a stored cross-site scripting (XSS) vulnerability. An attacker with low-level user privileges can inject malicious scripts that execute in other users' browsers, potentially stealing session tokens or performing actions on their behalf. The vulnerability affects the entire marketplace scope due to scope change in the CVSS vector.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers and steal their session data or perform actions as them.
Potential impact on your site
04Site Impact
Vendors and buyers can be compromised without clicking a link; their accounts may be hijacked or data stolen.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the marketplace (vendor or buyer account).
Key dates
06Disclosure timeline
July 11, 2026
CVE published
July 13, 2026
Record updated
