CVE-2026-3688 Privilege escalation in WCFM Membership – WooCommerce Memberships for Multivendor Marketplace
Authenticated vendors can escalate privileges by modifying other users' roles via an insecure direct object reference in the WCFM Membership plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3688?
CVE-2026-3688 is a high-severity vulnerability in wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace, published on 8 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-3688?
How do I fix CVE-2026-3688?
No fix has been published for CVE-2026-3688 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3688 being exploited?
There is no known exploitation of CVE-2026-3688 in the wild and no public exploit code.
Sources
Also known as GHSA-2jfc-5xjv-8mv7.