{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-109447", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-10-12T16:12:22.990Z", "datePublished": "2026-10-16T05:30:24.704Z", "dateUpdated": "2026-10-16T05:30:24.704Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-10-16T05:30:24.704Z"}, "affected": [{"vendor": "cozmoslabs", "product": "User Profile Builder \u2013 Beautiful User Registration Forms, User Profiles & User Role Editor", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "4.0.3", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The User Profile Builder \u2013 Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.0.3 via the `role` parameter handled by the `wppb_add_meta_to_user_on_activation()` function. The vulnerability exists because the activation handler passes the attacker-supplied role value directly to `WP_User::set_role()` with no allow-list validation, and the 4.0.3 reserved-name check exempts pre-existing form fields from the block, allowing a legacy field with meta-name `role` to persist and bridge attacker-controlled request input into the serialized signup record stored in `wp_signups`. This makes it possible for unauthenticated attackers to gain a fully activated WordPress administrator account by submitting `role=administrator` through the public `[wppb-register]` shortcode form and subsequently clicking the confirmation activation link. Exploitation requires the site to have a legacy form field with meta-name `role` carried over from before the 4.0.3 upgrade, email confirmation enabled, and open user registration \u2014 all stable site-state conditions once established."}], "title": "User Profile Builder <= 4.0.3 - Unauthenticated Privilege Escalation to 'role' Parameter via Legacy Meta-Name Collision on [wppb-register]", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/88bfd754-e2ee-47c7-9af5-f31cbe993102?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/email-confirmation/email-confirmation.php#L262"}, {"url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/class-formbuilder.php#L793"}, {"url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/class-formbuilder.php#L736"}, {"url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/register.php#L91"}, {"url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/admin/admin-functions.php#L400"}, {"url": "https://plugins.trac.wordpress.org/changeset/3741133/profile-builder"}, {"url": "https://plugins.trac.wordpress.org/changeset/3741133/profile-builder/trunk/features/email-confirmation/email-confirmation.php"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-269 Improper Privilege Management", "cweId": "CWE-269", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Supakiad S. (m3ez)"}], "timeline": [{"time": "2026-10-08T20:48:40.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-10-15T16:37:33.000Z", "lang": "en", "value": "Disclosed"}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "User Profile Builder \u2013 Beautiful User Registration Forms, User Profiles & User Role Editor", "vendor": "cozmoslabs", "versions": [{"lessThanOrEqual": "4.0.3", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The User Profile Builder \u2013 Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.0.3 via the `role` parameter handled by the `wppb_add_meta_to_user_on_activation()` function. The vulnerability exists because the activation handler passes the attacker-supplied role value directly to `WP_User::set_role()` with no allow-list validation, and the 4.0.3 reserved-name check exempts pre-existing form fields from the block, allowing a legacy field with meta-name `role` to persist and bridge attacker-controlled request input into the serialized signup record stored in `wp_signups`. This makes it possible for unauthenticated attackers to gain a fully activated WordPress administrator account by submitting `role=administrator` through the public `[wppb-register]` shortcode form and subsequently clicking the confirmation activation link. Exploitation requires the site to have a legacy form field with meta-name `role` carried over from before the 4.0.3 upgrade, email confirmation enabled, and open user registration \u2014 all stable site-state conditions once established."}], "id": "CVE-2026-109447", "lastModified": "2026-10-16T14:51:17.720", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "security@wordfence.com", "type": "Primary"}]}, "published": "2026-10-16T06:17:08.020", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/admin/admin-functions.php#L400"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/features/email-confirmation/email-confirmation.php#L262"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/class-formbuilder.php#L736"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/class-formbuilder.php#L793"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/profile-builder/tags/4.0.3/front-end/register.php#L91"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3741133/profile-builder"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3741133/profile-builder/trunk/features/email-confirmation/email-confirmation.php"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/88bfd754-e2ee-47c7-9af5-f31cbe993102?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}], "source": "security@wordfence.com", "type": "Primary"}]}

{}

{"created": "2026-10-16T13:25:39.543619+00:00", "updated": "2026-10-16T14:15:13.747391+00:00", "vendors": []}