{"id":"CVE-2026-93428","summary":"Ultimate Member \u003c= 2.13.1 - Missing Authorization to Unauthenticated Sensitive Profile Field Disclosure via Member Directory Field Privacy Bypass","details":"The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.13.1 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to view privacy-restricted member profile field values — including fields explicitly configured as owner-only, members-only, or role-restricted — by querying the publicly accessible wp_ajax_nopriv_um_get_members endpoint. The nonce required by the endpoint ('um-frontend-nonce') is emitted to all unauthenticated visitors via wp_localize_script, meaning it provides no meaningful access control and any anonymous visitor can satisfy the endpoint's authentication requirements.","modified":"2026-10-08T02:30:18.286870410Z","published":"2026-10-03T02:25:36.239Z","database_specific":{"cna_assigner":"Wordfence","cwe_ids":["CWE-862"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93428.json"},"references":[{"type":"WEB","url":"https://github.com/ultimatemember/ultimatemember/releases/tag/2.14.0"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-ajax-common.php#L61"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-fields.php#L144"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2795"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/class-member-directory.php#L2839"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/core/um-actions-profile.php#L1319"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/ultimate-member/tags/2.13.1/includes/um-short-functions.php#L1579"},{"type":"WEB","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/cde81421-e080-4530-87a5-6515f1c9800b?source=cve"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93428.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93428"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ultimatemember/ultimatemember","events":[{"introduced":"0"},{"fixed":"fc07436d566c0a297e06d6504f2a60b9b2db7e63"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"2.13.1"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["2.8.9","2.8.8","2.8.7","2.8.6","2.8.5","2.8.4","2.8.3","2.8.2","2.8.1","2.8.0","2.7.0","2.6.11","2.6.10","2.6.9","2.6.8","2.6.7","2.6.6","2.6.5","2.6.4","2.6.3","2.6.2","2.6.1","2.6.0","2.5.4","2.5.3","2.5.2","2.5.1","2.5.0","2.4.2","2.4.1","2.4.0","2.3.2","2.3.1","2.3.0","2.2.5","2.2.4","2.2.3","2.2.2","2.2.1","2.2.0","2.1.20","2.1.19","2.1.18","2.1.17","2.1.16","2.1.15","2.1.14","2.1.13","2.1.12","2.1.11","2.1.10","2.1.9","2.1.8","2.1.7","2.1.6","2.1.5","2.1.4","2.1.3","2.1.3-rc.1","2.1.2","2.1.2-rc.1","2.1.1","2.1.0","2.1.0-rc.2","2.1.0-rc.1","2.0.54","2.0.53","2.0.50","2.0.49","2.0.48","2.0.47","2.0.46","2.0.45","2.0.44","2.0.43","2.0.41","2.0.39","2.0.38","2.0.37","2.0.35","2.0.34","2.0.24","2.0.17","2.0.16","2.0.11","2.0.10","2.0.9","2.0.5","2.0.4","1.3.88","1.3.88.6","1.3.88.5","1.3.88.4","v1.3.88.3","v1.3.88.2","v1.3.88.1","v1.3.84","v1.3.83","v1.3.82","v1.3.81","v1.3.79","v1.3.78","v1.3.76","v1.3.75","v1.3.74","v1.3.73","v1.3.72","v1.3.71","v1.3.69","pre-v1.3.69.25","pre-v1.3.69.24","pre-v1.3.69.23","pre-v1.3.69.22","pre-v1.3.69.21","pre-v1.3.69.20","pre-v1.3.69.19","pre-v1.3.69.18","pre-v1.3.69.17","pre-v1.3.69.16","v1.3.68","v1.3.67","v1.3.66","v1.3.65","v1.3.64","v1.3.63","v1.3.62","v1.3.61","v1.3.60","1.3.59","v1.3.56","v1.3.55","v1.3.54","v1.3.53","v1.3.52","v1.3.51","pre-v1.3.50","v1.3.49","1.3.48","v1.3.47","v1.3.45","v1.3.44","v1.3.43","v1.3.42","v1.3.41","v1.3.40","v1.3.39","v1.3.38","v1.3.37","v1.3.36","v1.3.35","v1.3.32","v1.3.30","v1.3.29"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93428.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}