Smart Popup by Supsystic <= 1.12.0 — Unauthenticated Privilege Escalation to Administrator
CVE-2026-18322Published · Updated Action summary
Affected: ≤1.12.0Update to 1.13.0 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-269 Privilege Escalation
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Customer Engagement System – Popup Builder, Forms, CRM & Email Marketing Automation popup-by-supsystic
- Affected≤ 1.12.0
- Patched in1.13.0
Update to 1.13.0 or newer.
You are affected if you run ≤ 1.12.0. Version 1.13.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Customer Engagement System – Popup Builder, Forms, CRM & Email Marketing Automation.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 1.13.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Customer Engagement System – Popup Builder, Forms, CRM & Email Marketing Automation to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to daroo.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Customer Engagement System – Popup Builder, Forms, CRM & Email Marketing Automation
All 17| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Server-Side Request Forgery <2.0.2Update to 2.0.2 | CVE-2026-115225 | |
| High7.2 | Authenticated (Administrator+) Remote Code Execution <2.0.2Update to 2.0.2 | CVE-2026-115223 | |
| Medium4.9 | Authenticated (Administrator+) SQL Injection <2.0.2Update to 2.0.2 | CVE-2026-115224 | |
| Medium4.9 | Authenticated (Administrator+) SQL Injection via 'sidx' Parameter ≤1.13.2Update to 1.13.3 | CVE-2026-104023 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤1.13.1Update to 1.13.2 | CVE-2026-102398 |
- High7.2Unauthenticated Server-Side Request Forgery
<2.0.2Update to 2.0.2
- High7.2Authenticated (Administrator+) Remote Code Execution
<2.0.2Update to 2.0.2
- Medium4.9Authenticated (Administrator+) SQL Injection
<2.0.2Update to 2.0.2
- Medium4.9Authenticated (Administrator+) SQL Injection via 'sidx' Parameter
≤1.13.2Update to 1.13.3
- High7.2Unauthenticated Stored Cross-Site Scripting
≤1.13.1Update to 1.13.2
Same weakness (Privilege Escalation)
All Privilege Escalation| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 8.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.