{"id":"CVE-2026-96660","aliases":["EUVD-2026-103225","GHSA-mc7j-c3xf-rrxf"],"status":"published","title":"User Registration \u0026 Membership \u003c= 5.2.8 - Unauthenticated Stored Cross-Site Scripting via Checkbox Field Value","description":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0023,"percentile":0.13912,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-10-17T03:43:28Z","modified":"2026-10-19T15:16:45Z","products":[{"vendor":"wpeverest","product":"user registration \u0026 membership – free \u0026 paid memberships, subscriptions, content restriction, user profile, custom user registration \u0026 login builder"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/690d23ee-cf70-4ecf-8cd2-21f673788d5f?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/functions-ur-template.php#L555"},{"url":"https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/frontend/class-ur-frontend-form-handler.php#L519"},{"url":"https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/class-ur-ajax.php#L221"},{"url":"https://plugins.trac.wordpress.org/browser/user-registration/tags/5.2.8/includes/functions-ur-core.php#L5606"},{"url":"https://plugins.trac.wordpress.org/changeset/3741339/user-registration/trunk/includes/frontend/class-ur-frontend-form-handler.php"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-96660"},{"url":"https://github.com/advisories/GHSA-mc7j-c3xf-rrxf"}],"sources":{"cve":[{"id":"CVE-2026-96660","title":"User Registration \u0026 Membership \u003c= 5.2.8 - Unauthenticated Stored Cross-Site Scripting via Checkbox Field Value","description":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.","status":"published","published":"2026-10-17T03:43:28.389Z","modified":"2026-10-18T11:12:34.629Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:00.511569Z"}],"euvd":[{"id":"EUVD-2026-103225","description":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.","status":"published","published":"2026-10-17T03:43:28Z","modified":"2026-10-18T11:12:34Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T17:00:00.923575Z"}],"ghsa":[{"id":"GHSA-mc7j-c3xf-rrxf","title":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction,...","description":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.","status":"published","published":"2026-10-17T06:30:33Z","modified":"2026-10-17T06:30:39Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:13:53.726362Z"}],"nvd":[{"id":"CVE-2026-96660","description":"The User Registration \u0026 Membership – Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Checkbox Field Value in all versions up to, and including, 5.2.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The nopriv AJAX action user_registration_user_form_submit reaches ur_process_registration() without nonce validation, meaning any unauthenticated request can reach the vulnerable code path.","status":"published","published":"2026-10-17T04:17:10.537Z","modified":"2026-10-19T15:16:45.15Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:13:00.123071Z"}]}}