Smart Popup by Supsystic <= 1.12.0 - Unauthenticated Privilege Escalation to Administrator
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Smart Popup by Supsystic | <= 1.12.0 | 1.13.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-269- Platform
- WordPress
- Package
Smart Popup by Supsystic- Disclosed
- 04.08.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 835579b0-8a96-40fa-a6a3-30571a0a1d0a - Wordfence Intelligence
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Vulnerability history: Smart Popup by Supsystic
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 09.2016 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 6
- Medium 7
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 1
- 2022: 1
- 2023: 3
- 2024: 2
- 2025: 0
- 2026: 6
earlier: 1
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Smart Popup by Supsystic <= 1.12.0 - Unauthenticated Privilege Escalation to Administrator this entry
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