---
id: CVE-2026-12126
title: >-
  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 sanitizati…
summary: >-
  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 sanitizati…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-07-11'
updated: '2026-07-11'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12126'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L120
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L58
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/core/class-wcfmmp-media.php#L163
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L120
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L58
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/core/class-wcfmmp-media.php#L163
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3588629%40wc-multivendor-marketplace&new=3588629%40wc-multivendor-marketplace
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/881ec131-a716-4929-a44e-84bac161d81c?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00357
epssPercentile: 0.2679
ingestedAt: '2026-07-11T23:16:20.763Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.