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CVE-2026-12126— WCFM Marketplace <= 3.7.3 - Authenticated (Vendor+) Stored Cross-Site Scripting via Attachment 'post_title'

Quick assessment

Affected
wclovers WCFM Marketplace – Multivendor Marketplace for WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress WCFM Marketplace是WordPress基金会的一款多供应商电子商务市场组件。 WordPress WCFM Marketplace 3.7.3及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有Vendor级别及以上权限）通过附件“post_title”注入存储型跨站脚本，在用户访问受影响的页面时执行任意Web脚本。

CVSS 6.4 · Medium EPSS 0.20% · P11

Affected Version Matrix 1

VendorProduct Version RangeStatus
wclovers WCFM Marketplace – Multivendor Marketplace for WooCommerce ≤ 3.7.3 affected
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I. Basic Information for CVE-2026-12126

Vulnerability Information
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Vulnerability Title
WCFM Marketplace <= 3.7.3 - Authenticated (Vendor+) Stored Cross-Site Scripting via Attachment 'post_title'
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress WCFM Marketplace 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WCFM Marketplace是WordPress基金会的一款多供应商电子商务市场组件。 WordPress WCFM Marketplace 3.7.3及之前版本存在跨站脚本漏洞，该漏洞源于输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有Vendor级别及以上权限）通过附件“post_title”注入存储型跨站脚本，在用户访问受影响的页面时执行任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
wclovers WCFM Marketplace – Multivendor Marketplace for WooCommerce 0 ~ 3.7.3 -

II. Public POCs for CVE-2026-12126

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III. Intelligence Information for CVE-2026-12126

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Patches & Fixes for CVE-2026-12126 (3)

Other References for CVE-2026-12126 (2)

Same Patch Batch · wclovers · 2026-07-11 · 3 CVEs total

CVE-2026-12994 5.3 MEDIUM WCFM – Frontend Manager for WooCommerce <= 6.7.27 - Missing Authorization to Unauthenticat
CVE-2026-10041 4.3 MEDIUM WCFM – Frontend Manager for WooCommerce <= 6.7.27 - Authenticated (Subscriber+) Missing Au

IV. Related Vulnerabilities

Same product: WCFM Marketplace – Multivendor Marketplace for WooCommerce
Same vendor: wclovers
Same weakness: CWE-79

V. Comments for CVE-2026-12126

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