Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/changeset/3520777/wc-multivendor-membership
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8a934ccd-9330-4585-999
FAQ
What is CVE-2026-3688?
CVE-2026-3688 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 ...
How severe is CVE-2026-3688?
CVE-2026-3688 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3688?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.