---
id: CVE-2026-115225
title: >-
  Smart Popup by Supsystic < 2.0.2 - Unauthenticated SSRF via MailChimp Groups
  Lookup
summary: >-
  The Customer Engagement System  WordPress plugin before 2.0.2 does not
  restrict access to its MailChimp interest-group lookup or validate the API key
  supplied to it, allowing unauthenticated users to make the server open
  connections to a…
severity: medium
cvss: 5.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'
cvssSource: adp
cwe:
  - CWE-918
product: Customer Engagement System
affected:
  - customer_engagement_system < 2.0.2
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-28T17:41:00.623697Z'
published: '2026-10-28'
updated: '2026-10-28'
sourceUpdated: '2026-10-28T17:58:04.260Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-115225'
references:
  - url: 'https://wpscan.com/vulnerability/b91dc5fc-8b7b-4874-9e71-e3d07b41812a/'
tags:
  - cve.org
epss: 0.00245
epssPercentile: 0.15914
ingestedAt: '2026-10-28T07:06:27.136Z'
---

## Overview

The Customer Engagement System  WordPress plugin before 2.0.2 does not restrict access to its MailChimp interest-group lookup or validate the API key supplied to it, allowing unauthenticated users to make the server open connections to arbitrary internal hosts and ports and infer from response timing which ones are reachable.

## Affected

- `customer_engagement_system < 2.0.2`

## Remediation

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