CVE-2026-23693 PoC — ElementsKit Elementor Addons < 3.7.9 Unauthenticated Mailchimp REST Endpoint

Source

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-23693.yaml

Associated Vulnerability

Title: ElementsKit Elementor Addons < 3.7.9 Unauthenticated Mailchimp REST Endpoint (CVE-2026-23693)
Description:ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor (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.

Description

The ElementsKit Elementor Addons Lite (elementskit-lite) plugin for WordPress before 3.7.9 registers the REST route /wp-json/elementskit/v1/widget/mailchimp/subscribe with no authentication or capability check (CWE-306). The handler accepts client-supplied Mailchimp API credentials and a `list` parameter and issues upstream Mailchimp API requests, letting an unauthenticated attacker use the site as an open proxy to Mailchimp.

File Snapshot

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