CVE-2026-66651: Multivendorx

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Missing Authorization vulnerability in MultiVendorX MultiVendorX dc-woocommerce-multi-vendor allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MultiVendorX: from n/a through 5.0.19.

Affected products

• Multivendorx Multivendorx: up to and including 5.0.19

Published 2026-08-18. Last modified 2026-09-30.