What is CVE-2026-3688?

CVE-2026-3688 is a high-severity vulnerability in Wclovers Wcfm Membership – Woocommerce Memberships For Multivendor Marketplace, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-07-08.

How severe is CVE-2026-3688?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Wclovers Wcfm Membership – Woocommerce Memberships For Multivendor Marketplace

CVE-2026-3688

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.002 (12.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Wclovers Wcfm Membership – Woocommerce Memberships For Multivendor Marketplace — versions 0

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Frequently asked questions

What is CVE-2026-3688?: CVE-2026-3688 is a high-severity vulnerability in Wclovers Wcfm Membership – Woocommerce Memberships For Multivendor Marketplace, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-07-08.
How severe is CVE-2026-3688?: High severity. CVSS v3 base score is 8.1 out of 10.