CVE-2026-23693: CWE-306 Missing Authentication for Critical Function in Roxnor ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor
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.
AI Analysis
Technical Summary
CVE-2026-23693 is a critical vulnerability (CWE-306: Missing Authentication for Critical Function) in the ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor WordPress plugin. Versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without requiring authentication. This endpoint accepts Mailchimp API credentials from clients and insufficiently validates parameters such as the list parameter when making upstream Mailchimp API requests. An unauthenticated attacker can exploit this to use the endpoint as an open proxy, potentially triggering unauthorized Mailchimp API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.
Potential Impact
The vulnerability allows unauthenticated attackers to abuse the exposed REST endpoint to perform unauthorized Mailchimp API calls. This can lead to manipulation of subscription data, exhaustion of API quotas, and increased resource consumption on the WordPress site hosting the vulnerable plugin. The CVSS 4.0 score is 9.3 (critical), reflecting the network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No official patch or fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, it is recommended to restrict access to the vulnerable REST endpoint or disable the affected plugin if possible to prevent exploitation.
CVE-2026-23693: CWE-306 Missing Authentication for Critical Function in Roxnor ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor
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.
CVSS v4.0
Score 9.3critical
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-23693 is a critical vulnerability (CWE-306: Missing Authentication for Critical Function) in the ElementsKit Elementor Addons – Advanced Widgets & Templates Addons for Elementor WordPress plugin. Versions prior to 3.7.9 expose the REST endpoint /wp-json/elementskit/v1/widget/mailchimp/subscribe without requiring authentication. This endpoint accepts Mailchimp API credentials from clients and insufficiently validates parameters such as the list parameter when making upstream Mailchimp API requests. An unauthenticated attacker can exploit this to use the endpoint as an open proxy, potentially triggering unauthorized Mailchimp API calls, manipulating subscription data, exhausting API quotas, or causing resource consumption on the affected WordPress site.
Potential Impact
The vulnerability allows unauthenticated attackers to abuse the exposed REST endpoint to perform unauthorized Mailchimp API calls. This can lead to manipulation of subscription data, exhaustion of API quotas, and increased resource consumption on the WordPress site hosting the vulnerable plugin. The CVSS 4.0 score is 9.3 (critical), reflecting the network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No official patch or fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, it is recommended to restrict access to the vulnerable REST endpoint or disable the affected plugin if possible to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-01-14T20:09:32.352Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 699cee30be58cf853bef4e7c
Added to database: 02/24/2026, 00:17:52 UTC
Last enriched: 07/15/2026, 11:03:44 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 254
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