CVE-2026-18322 (GCVE-0-2026-18322)

Vulnerability from cvelistv5 – Published: 2026-08-05 04:25 – Updated: 2026-08-05 14:12
VLAI
Title
Smart Popup by Supsystic <= 1.12.0 - Unauthenticated Privilege Escalation to Administrator
Summary
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:12 UTC
CWE
  • CWE-269 - Improper Privilege Management
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2250 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
supsysticcom Smart Popup by Supsystic Affected: 0 , ≤ 1.12.0 (semver)
guessed Create a notification for this product.
Credits
daroo
Show details on NVD website
To clipboard 

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