ElementsKit Lite (elementskit-lite) WordPress plugin versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without authentication. The endpoint accepts client-supplied Mailchimp API credentials and insufficiently validates certain parameters, including the list parameter, when constructing upstream Mailchimp API requests. An unauthenticated attacker can abuse the endpoint as an open proxy to Mailchimp, potentially triggering unauthorized API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.
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History

Mon, 23 Feb 2026 21:00:00 +0000

Type Values Removed Values Added
Description ElementsKit Lite (elementskit-lite) WordPress plugin versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without authentication. The endpoint accepts client-supplied Mailchimp API credentials and insufficiently validates certain parameters, including the list parameter, when constructing upstream Mailchimp API requests. An unauthenticated attacker can abuse the endpoint as an open proxy to Mailchimp, potentially triggering unauthorized API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.
Title ElementsKit Lite < 3.7.9 Unauthenticated Mailchimp REST Endpoint
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-23T20:33:55.075Z

Reserved: 2026-01-14T20:09:32.352Z

Link: CVE-2026-23693

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-23T21:19:10.157

Modified: 2026-02-23T21:19:10.157

Link: CVE-2026-23693

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses