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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00153.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Unknown Customer Engagement System unaffected
Version Status Constraints
0 affected < 2.0.2

No data.

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://wpscan.com/vulnerability/b91dc5fc-8b7b-4874-9e71-e3d07b41812a/ cve-icon cve-icon
History

Wed, 28 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N'}

Wed, 28 Oct 2026 08:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918

Wed, 28 Oct 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title Smart Popup by Supsystic < 2.0.2 - Unauthenticated SSRF via MailChimp Groups Lookup
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-10-28T17:58:04.260Z

Reserved: 2026-10-22T07:52:11.510Z

Link: CVE-2026-115225

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-28T06:16:35.723

Modified: 2026-10-28T18:17:11.780

Link: CVE-2026-115225

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-28T08:15:14Z

Weaknesses