Auth bypass in Roxnor Elementskit Elementor Addons – Advanced Widgets & Templates For
CVE-2026-23693
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.009 · change: +0.005
Affected products
Weakness classification (CWE)
References
- wordpress.org/plugins/elementskit-lite/ (product, patch)
- wpmet.com/plugin/elementskit/ (product)
- www.vulncheck.com/advisories/elementskit-lite-unauthenticated-mailchimp-rest-en… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-23693?
- CVE-2026-23693 is a critical-severity vulnerability in Roxnor Elementskit Elementor Addons – Advanced Widgets & Templates For, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2026-02-23.
- How severe is CVE-2026-23693?
- Critical severity. CVSS v3 base score is 10.0 out of 10.