CVE-2026-14230
Received Received - Intake

Stored XSS in ECS WordPress Plugin via Dynamic Repeater AJAX

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: WPScan

Description
The ECS WordPress plugin before 4.3.8 does not perform capability or object-ownership checks on its Dynamic Repeater AJAX handlers (gated only by a capability-agnostic nonce that any edit_posts user obtains from the Elementor editor), so a Contributor can write a data-source binding into any post — including admin-authored pages — whose attacker-controlled values are rendered into a widget's repeater output without sanitization, executing JavaScript in the session of any visitor or administrator who views the page.

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Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-14230
EUVD
EUVD-2026-59588

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ecs wordpress_plugin to 4.3.8 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability affects the ECS WordPress plugin before version 4.3.8. It allows Contributors to inject malicious JavaScript into any post, including admin pages, through unsanitized data-source bindings in widget repeater output. The issue stems from missing capability checks and object-ownership validation on Dynamic Repeater AJAX handlers, which are only protected by a nonce accessible to any user with edit_posts capability.

Detection Guidance

Check for the ECS WordPress plugin version before 4.3.8. Inspect AJAX handlers for Dynamic Repeater in Elementor editor. Look for unauthorized data-source bindings in posts, especially admin-authored pages.

Impact Analysis

An attacker with Contributor access could inject JavaScript into pages viewed by administrators or other users. This could lead to session hijacking, defacement, or theft of sensitive data like cookies or credentials. Visitors viewing compromised pages may have their sessions compromised or be redirected to malicious sites.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, violating GDPR's integrity and confidentiality principles or HIPAA's safeguards for protected health information. Organizations may face compliance breaches if user data is compromised through this exploit.

Mitigation Strategies

Update the ECS WordPress plugin to version 4.3.8 or later. Remove or restrict Contributor roles' access to Elementor editor. Review and sanitize all post content for injected scripts.

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