{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-103900", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-10-01T14:04:44.509Z", "datePublished": "2026-11-07T09:25:47.227Z", "dateUpdated": "2026-11-07T09:25:47.227Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-11-07T09:25:47.227Z"}, "affected": [{"vendor": "denishua", "product": "WPJAM Basic", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "7.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The WPJAM Basic plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 7.1 This is due to the WPJAM_User_Signup::signup() function unpacking attacker-supplied `data[args]` from the AJAX POST body and merging it via PHP array union into the payload passed to WPJAM_User::create(), whose internal whitelist (wpjam_pick) explicitly preserves the `role` key before it is handed to wp_insert_user(). The endpoint is registered as wp_ajax_nopriv_{provider}-signup with a nonce that is emitted on the public login page. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by creating a new user with an attacker-chosen role, provided a social-login provider is registered and open registration is enabled."}], "title": "WPJAM Basic <= 7.1 - Unauthenticated Privilege Escalation to 'data[args][role]' Parameter", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313"}, {"url": "https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302"}, {"url": "https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155"}, {"url": "https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396"}, {"url": "https://wordpress.org/plugins/wpjam-basic/"}], "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": "nudien"}], "timeline": [{"time": "2026-10-01T15:35:58.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-11-06T21:20:42.000Z", "lang": "en", "value": "Disclosed"}]}}}