# CVE-2026-39794: WooCommerce Multivendor Marketplace REST API broken access control

Source: https://junglewise.ai/threats/cve-2026-39794-unauthenticated-broken-access-control-in-woocommerce-multivendor  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

CVE-2026-39794 · Severity: high · CVSS 7.5 · Published 2026-10-06

WooCommerce Multivendor Marketplace is a WordPress plugin that enables multi-vendor ecommerce functionality. An unauthenticated attacker can bypass access controls in the REST API to access or modify marketplace data without proper authorization, potentially exposing vendor and transaction information or allowing unauthorized modifications.

Vendors: [WooCommerce](https://junglewise.ai/threats/vendors/woocommerce).

## Quick answers

**Is CVE-2026-39794 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-39794 being exploited in the wild.

**How severe is CVE-2026-39794?** High severity, with a CVSS score of 7.5, published 6 October 2026.

**Which products and versions are affected?** WooCommerce Multivendor Marketplace REST API 1.6.3 and earlier.

**Is there a fix for CVE-2026-39794?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-39794 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-39794?** Check whether you run WooCommerce Multivendor Marketplace REST API at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An unauthenticated broken access control vulnerability exists in the WooCommerce Multivendor Marketplace REST API that allows attackers to access protected endpoints without proper authorization. The vulnerability affects the REST API in versions up to and including 1.6.3. Exploitation requires only network access to the affected REST API endpoints.

## Affected products

- WooCommerce Multivendor Marketplace REST API 1.6.3 and earlier

## Timeline

- 2026-10-06: disclosed

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/wcfm-marketplace-rest-api/vulnerability/wordpress-woocommerce-multivendor-marketplace-rest-api-plugin-1-6-3-broken-access-control-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/wcfm-marketplace-rest-api/vulnerability/wordpress-woocommerce-multivendor-marketplace-rest-api-plugin-1-6-3-broken-access-control-vulnerability?_s_id=cve)