Vulnerability · Published Jul 8, 2026 · Assigned by Wordfence
CVE-2026-3688WCFM - WooCommerce Multivendor Membership <= 2.11.10 - Insecure Direct Object Reference to Limited Privilege Escalation via User Role Overwrite
High 8.1
In plain English
A high-severity authorization bypass via user-controlled key in WCFM Membership – WooCommerce Memberships for Multivendor Marketplace from wclovers. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Official description
The WCFM Membership – WooCommerce Memberships for Multivendor Marketplace plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.11.10. This is due to the 'wcfmvm_membership_change' AJAX action not validating user permission to modify other users. This makes it possible for authenticated attackers, with vendor level access and above, to change any user's role to 'wcfm_vendor' by changing their membership plan.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| wclovers | WCFM Membership – WooCommerce Memberships for Multivendor Marketplace | 0 – through 2.11.10 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H