Supsystic Smart Popup Plugin up to 1.12.0 on WordPress Permission Map classes/frame.php havePermissions sub_wp_create_user_role privileges management

Summaryinfo

A vulnerability classified as problematic has been found in Supsystic Smart Popup Plugin up to 1.12.0. The affected element is the function havePermissions of the file classes/frame.php of the component Permission Map. Performing a manipulation of the argument sub_wp_create_user_role results in privileges management. This vulnerability is reported as CVE-2026-18322. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Supsystic Smart Popup Plugin up to 1.12.0. It has been classified as problematic. This affects the function havePermissions of the file classes/frame.php of the component Permission Map. The manipulation of the argument sub_wp_create_user_role with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. This vulnerability is uniquely identified as CVE-2026-18322 since 07/29/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/05/2026). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:classes/frame.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Supsystic

Name

• Smart Popup Plugin

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12.0

CPE 2.3info

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CPE 2.2info

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