{"id":"CVE-2022-4939","aliases":["EUVD-2022-52193","GHSA-qxmh-28j4-pv6f"],"status":"published","title":"WCFM Membership \u003c= 2.10.0 - Unauthenticated Privilege Escalation","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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02099,"percentile":0.81829,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-862"],"published":"2023-04-05T18:00:30Z","modified":"2026-06-17T05:22:21Z","exploits":[{"source":"pocgithub","id":"BaconCriCRi/PoC-CVE-2022-4939-","title":"BaconCriCRi/PoC-CVE-2022-4939-","date":"2023-04-06","url":"https://github.com/BaconCriCRi/PoC-CVE-2022-4939-"}],"products":[{"vendor":"wclovers","product":"wcfm membership – woocommerce memberships for multivendor marketplace"},{"vendor":"wclovers","product":"wcfm_membership"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/0870de2d-bca5-4d57-a07f-877a416ce0d5?source=cve","tags":["x_transferred","Patch","Third Party Advisory"]},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=2633191%40wc-multivendor-membership\u0026new=2633191%40wc-multivendor-membership\u0026sfp_email=\u0026sfph_mail=","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4939"},{"url":"https://github.com/advisories/GHSA-qxmh-28j4-pv6f"}],"sources":{"cve":[{"id":"CVE-2022-4939","title":"WCFM Membership \u003c= 2.10.0 - Unauthenticated Privilege Escalation","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.","status":"published","published":"2023-04-05T18:00:30.235Z","modified":"2026-04-08T16:34:15.684Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:34:38.263045Z"}],"euvd":[{"id":"EUVD-2022-52193","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.","status":"published","published":"2023-04-05T18:00:30Z","modified":"2026-04-08T16:34:15Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:25:10.76969Z"}],"ghsa":[{"id":"GHSA-qxmh-28j4-pv6f","title":"THe WCFM Membership plugin for WordPress is vulnerable to privilege escalation in versions up to,...","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.","status":"published","published":"2023-04-05T21:30:25Z","modified":"2023-04-19T05:09:53Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:54:31.754243Z"}],"nvd":[{"id":"CVE-2022-4939","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.","status":"published","published":"2023-04-05T19:15:07.453Z","modified":"2026-06-17T05:22:21.407Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:07:37.020555Z"}]}}