Vulnerability · Published Feb 23, 2026 · Assigned by VulnCheck
CVE-2026-23693ElementsKit Elementor Addons < 3.7.9 Unauthenticated Mailchimp REST Endpoint
Critical 10.0
In plain English
A critical-severity missing authentication in ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor from Roxnor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Roxnor | ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor | 0 – before 3.7.9 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H