CVE-2026-12126 json
WCFM Marketplace <= 3.7.3 - Authenticated (Vendor+) Stored Cross-Site Scripting via Attachment 'post_title'
published 2026-07-11 3 mo ago modified 2026-07-13 3 mo ago also EUVD-2026-43158
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
Affected products
- wclovers WCFM Marketplace – Multivendor Marketplace for WooCommerce
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/881ec131-a716-4929-a44e-84bac161d81c?source=cve
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L120
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L120
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.3/core/class-wcfmmp-media.php#L163
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.3/controllers/media/wcfmmp-controller-media.php#L58
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.2/core/class-wcfmmp-media.php#L163
- plugins.trac.wordpress.org /browser/wc-multivendor-marketplace/tags/3.7.2/controllers/media/wcfmmp-controller-media.php#L58
- plugins.trac.wordpress.org /changeset?reponame=&old=3588629%40wc-multivendor-marketplace&new=3588629%40wc-multivendor-marketplace
Sources
- CVE List CVE-2026-12126
- NVD CVE-2026-12126
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.