What’s Vulnerable › Vulnerabilities

CVE-2022-4939: WCFM Membership <= 2.10.0 - Unauthenticated Privilege Escalation

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-05 · updated 2026-06-17
• Weakness: CWE-862

Description

THe WCFM Membership plugin for WordPress is vulnerable to privilege escalation in versions up to, and including 2.10.0, due to a missing capability check on the wp_ajax_nopriv_wcfm_ajax_controller AJAX action that controls membership settings. This makes it possible for unauthenticated attackers to modify the membership registration form in a way that allows them to set the role for registration to that of any user including administrators. Once configured, the attacker can then register as an administrator.

Affected products

• wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace: before 2.10.1 — fixed in 2.10.1

How to fix

Upgrade to a fixed version: wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace 2.10.1. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2633191%40wc-multivendor-membership&new=2633191%40wc-multivendor-membership&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0870de2d-bca5-4d57-a07f-877a416ce0d5?source=cve
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2633191%40wc-multivendor-membership&new=2633191%40wc-multivendor-membership&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/0870de2d-bca5-4d57-a07f-877a416ce0d5?source=cve

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