What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-23 · updated 2026-06-17
• Weakness: CWE-306

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

• roxnor ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor: before 3.7.9 — fixed in 3.7.9

How to fix

Upgrade to a fixed version: roxnor ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor 3.7.9. Check the vendor advisory for mitigations.

References

• https://wordpress.org/plugins/elementskit-lite/
• https://wpmet.com/plugin/elementskit/
• https://www.vulncheck.com/advisories/elementskit-lite-unauthenticated-mailchimp-rest-endpoint

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