{"affected":[{"defaultStatus":"unaffected","product":"WPJAM Basic","source":"CNA: Wordfence","vendor":"denishua","versions":[{"lessThanOrEqual":"7.1","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-103900","cwes":["CWE-269"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.1,"severity":"high","source":"CNA: Wordfence","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8.1,"severity":"high","source":"NVD: security@wordfence.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794046626360,"publishedAt":1794043547227,"references":[{"source":"CNA: Wordfence","tags":[],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155"},{"source":"CNA: Wordfence","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396"},{"source":"CNA: Wordfence","tags":[],"url":"https://wordpress.org/plugins/wpjam-basic/"},{"source":"security@wordfence.com","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155"},{"source":"security@wordfence.com","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302"},{"source":"security@wordfence.com","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313"},{"source":"security@wordfence.com","tags":[],"url":"https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396"},{"source":"security@wordfence.com","tags":[],"url":"https://wordpress.org/plugins/wpjam-basic/"},{"source":"security@wordfence.com","tags":[],"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve"}],"remediation":[],"revision":"1f0373b26bfe97cc39cb28256000c58852f8b1bb697767fc203191433aa565bf","sources":[{"modifiedAt":1794043547227,"name":"CNA: Wordfence","retrievedAt":1794046098762,"url":"https://www.cve.org/CVERecord?id=CVE-2026-103900"},{"modifiedAt":1794046626360,"name":"NVD","retrievedAt":1794053768898,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103900"}],"ssvc":null,"status":"published","title":"WPJAM Basic <= 7.1 - Unauthenticated Privilege Escalation to 'data[args][role]' Parameter","updatedAt":1794053768898}