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CVE-2026-18322— Smart Popup by Supsystic <= 1.12.0 - Unauthenticated Privilege Escalation to Administrator

Quick assessment

Affected
supsysticcom Smart Popup by Supsystic
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Smart Popup by Supsystic是WordPress基金会开源的一款创建弹出窗口的网站插件。 WordPress Smart Popup by Supsystic存在权限许可和访问控制问题漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。

CVSS 8.8 · High EPSS 0.59% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
supsysticcom Smart Popup by Supsystic ≤ 1.12.0 affected
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I. Basic Information for CVE-2026-18322

Vulnerability Information
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Vulnerability Title
Smart Popup by Supsystic <= 1.12.0 - Unauthenticated Privilege Escalation to Administrator
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Smart Popup by Supsystic 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Smart Popup by Supsystic是WordPress基金会开源的一款创建弹出窗口的网站插件。 WordPress Smart Popup by Supsystic存在权限许可和访问控制问题漏洞，可能导致攻击者利用漏洞破坏系统的机密性、完整性或可用性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
supsysticcom Smart Popup by Supsystic 0 ~ 1.12.0 -

II. Public POCs for CVE-2026-18322

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III. Intelligence Information for CVE-2026-18322

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Patches & Fixes for CVE-2026-18322 (2)

News Coverage for CVE-2026-18322 (1)

Other References for CVE-2026-18322 (1)

IV. Related Vulnerabilities

Same vendor: supsysticcom
Same weakness: CWE-269

V. Comments for CVE-2026-18322

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