CVE-2026-3688 | The WCFM Membership – WooCommerce Memberships for Multivendo… | CVSS 8.1 HIGH

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.

Metadata

CVE ID: CVE-2026-3688
State: PUBLISHED
Assigner: Wordfence
Reserved: 2026-03-06 23:43 UTC
Published: 2026-07-08 11:35 UTC
Last updated: 2026-07-08 15:01 UTC
Primary CWE: CWE-639
CWE-639 Authorization Bypass Through User-Controlled Key
Vendor / Product: wclovers / WCFM Membership – WooCommerce Memberships for Multivendor Marketplace
Sources: cve.org · NVD

Severity & Metrics

8.1 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
wclovers	WCFM Membership – WooCommerce Memberships for Multivendor Marketplace	—	0 ≤ 2.11.10

Weakness (CWE)

CWE	Source	Description
CWE-639	cna	CWE-639 Authorization Bypass Through User-Controlled Key

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.1	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

References (2)