{"id":"CVE-2026-18322","published":"2026-08-05T06:16:37.330","lastModified":"2026-08-05T15:16:40.560","description":"The Smart Popup by Supsystic plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.12.0. This is due to a permission map collision in the `havePermissions()` function in `classes/frame.php`, where `array_merge()` overwrites the popup module's administrator-restricted method list with the base controller's value, silently removing `save` from protected actions; this is compounded by the subscription confirmation email embedding the same generic `pps_nonce` that the unauthenticated `wp_ajax_nopriv_save` endpoint accepts, and by the complete absence of any server-side role allowlist in `createWpSubscriber()`. This makes it possible for unauthenticated attackers to submit a crafted POST request to `admin-ajax.php` using a nonce obtained from a public subscription confirmation email, setting `params[tpl][sub_wp_create_user_role]` to `administrator` via the exposed `popupControllerPps::save()` action, and then triggering the stored confirmation flow to create a persistent WordPress Administrator account with attacker-chosen credentials.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/classes/frame.php#L180","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/popup/models/popup.php#L316","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L292","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L358","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.11.2/modules/subscribe/models/subscribe.php#L440","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3629986%40popup-by-supsystic%2Ftrunk%2Fmodules%2Fsubscribe%2Fmodels%2Fsubscribe.php&old=3628131%40popup-by-supsystic%2Ftrunk%2Fmodules%2Fsubscribe%2Fmodels%2Fsubscribe.php&sfp_email=&sfph_mail=","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/835579b0-8a96-40fa-a6a3-30571a0a1d0a?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw allows unauthenticated attackers to exploit a privilege escalation vulnerability by submitting a crafted POST request with a nonce from a public subscription confirmation email, potentially creating an administrator account.","exploitability":"Exploitation is moderately difficult requiring access to a public subscription confirmation email and crafting a specific POST request.","blast_radius":"If exploited, the attacker could gain full control over the WordPress site as an administrator with chosen credentials.","remediation":"Update to the latest version of the Smart Popup by Supsystic plugin or remove it entirely if not in use.","tags":["privilege-escalation","wp-plugin","unauthenticated"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:46:58.421Z"}}