---
id: CVE-2026-104023
title: >-
  The Smart Popup by Supsystic plugin for WordPress is vulnerable to generic SQL
  Injection via the 'sidx' parameter in all versions up to, and including,
  1.13.2 due to insufficient escaping on the user supplied parameter and lack of
  suffic…
summary: >-
  The Smart Popup by Supsystic plugin for WordPress is vulnerable to generic SQL
  Injection via the 'sidx' parameter in all versions up to, and including,
  1.13.2 due to insufficient escaping on the user supplied parameter and lack of
  suffic…
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-89
published: '2026-10-10'
updated: '2026-10-10'
sourceUpdated: '2026-10-10T06:16:38.590'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104023'
references:
  - url: 'https://plugins.trac.wordpress.org/browser/popup-by-supsystic/'
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/classes/controller.php#L188
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/classes/controller.php#L239
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/classes/db.php#L36
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/classes/model.php#L168
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/classes/table.php#L269
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/popup-by-supsystic/tags/1.13.2/modules/popup/controller.php#L57
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3736105%40popup-by-supsystic%2Ftags%2F1.13.3&old=3719020%40popup-by-supsystic%2Ftags%2F1.13.2
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/1fdf895c-dd2a-4e2c-b323-a42226982cb7?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-10-10T06:24:42.858Z'
---

## Overview

The Smart Popup by Supsystic plugin for WordPress is vulnerable to generic SQL Injection via the 'sidx' parameter in all versions up to, and including, 1.13.2 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.