WCFM Marketplace <= 3.7.3 - Authenticated (Vendor+) Stored Cross-Site Scripting via Attachment 'post_title'
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
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 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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12126
- 2026-10-03 Alias added: GHSA-392f-h24w-84fc
References
Other 8
- https://www.wordfence.com/threat-intel/vulnerabilities/id/881ec131-a716-4929-a44e-84bac161d81c?source=cve
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L120
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L120
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/core/class-wcfmmp-media.php#L163
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L58
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/core/class-wcfmmp-media.php#L163
- https://plugins.trac.wordpress.org/browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L58
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3588629%40wc-multivendor-marketplace&new=3588629%40wc-multivendor-marketplace
More wclovers vulnerabilities
- TI-2022-04530 WCFM Membership <= 2.10.0 - Unauthenticated Privilege Escalation CVSS 3.1CRITICAL 9.8
- TI-2021-07131 WCFM - WooCommerce Multivendor Marketplace < 3.4.12 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2023-02134 Authorization bypass in wclovers WCFM Membership – WooCommerce Memberships for… CVSS 3.1CRITICAL 9.8
- TI-2026-56125 WordPress WCFM Marketplace plugin <= 3.8.1 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
- TI-2024-07686 Authorization bypass in wclovers WCFM – Frontend Manager for WooCommerce CVSS 3.1HIGH 8.8
- TI-2022-04526 WCFM Marketplace <= 3.4.11 - Missing Authorization CVSS 3.1HIGH 8.8
Sources
- CVE-2026-12126 · CVE Program
- CVE-2026-12126 · NVD
- FIRST EPSS
- GHSA-392f-h24w-84fc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences