CVE-2026-57376 Overview
CVE-2026-57376 is a DOM-Based Cross-Site Scripting (XSS) vulnerability in the ElementInvader Addons for Elementor WordPress plugin. The flaw stems from improper neutralization of input during web page generation [CWE-79]. It affects all plugin versions from initial release through 1.4.3.
An attacker can craft a malicious URL or input that, when processed by vulnerable client-side JavaScript, executes arbitrary script in the victim's browser. Exploitation requires user interaction, typically clicking a crafted link. Successful exploitation impacts confidentiality, integrity, and availability within the browser context of the targeted user.
Critical Impact
Attackers can execute arbitrary JavaScript in a victim's browser session, enabling session token theft, credential harvesting, and unauthorized actions performed as the authenticated user.
Affected Products
- ElementInvader Addons for Elementor plugin for WordPress
- Versions from n/a through 1.4.3 (inclusive)
- WordPress sites using vulnerable plugin versions with Elementor
Discovery Timeline
- 2026-07-13 - CVE-2026-57376 published to NVD
- 2026-07-13 - Last updated in NVD database
Technical Details for CVE-2026-57376
Vulnerability Analysis
The vulnerability is a DOM-Based XSS flaw in the ElementInvader Addons for Elementor plugin. Client-side JavaScript in the plugin consumes attacker-controllable input and writes it into the Document Object Model (DOM) without sufficient sanitization or encoding.
Unlike reflected or stored XSS, the payload is not required to reach the server. The malicious content is processed entirely within the browser, making it harder for server-side web application firewalls to detect. The vulnerability carries a low complexity attack profile and requires no privileges, only user interaction such as visiting a crafted URL.
The scope is changed, meaning the exploit can affect resources beyond the vulnerable component's security boundary. This typically means script execution in the context of the WordPress site can pivot to other browser origins or trigger actions across the site.
Root Cause
The root cause is improper neutralization of input during web page generation [CWE-79]. Vulnerable plugin code passes untrusted data into DOM sinks such as innerHTML, document.write, or jQuery .html() without applying context-aware encoding. WordPress escaping helpers such as wp_kses and esc_html are not applied to the client-side data flow.
Attack Vector
An attacker constructs a URL containing a malicious payload targeting the plugin's DOM handling logic. The attacker distributes the link through phishing, social media, or comment sections. When a user visits the link on a site running the vulnerable plugin, the client-side script parses the input and injects the payload into the DOM, executing attacker-controlled JavaScript in the victim's session.
The vulnerability is described in prose only; no verified public exploit code is available. Refer to the Patchstack Vulnerability Report for the underlying advisory.
Detection Methods for CVE-2026-57376
Indicators of Compromise
- Unexpected <script> tags, event handlers, or javascript: URIs appearing in referrer logs or client-side error reports on pages rendered by the plugin.
- Web server access logs showing requests with encoded payloads in URL fragments, query parameters, or hash values targeting Elementor-rendered pages.
- Reports from users of unexpected redirects, popup dialogs, or session anomalies after clicking links to the affected WordPress site.
Detection Strategies
- Inventory WordPress installations and identify sites running elementinvader-addons-for-elementor at version 1.4.3 or earlier.
- Deploy a Content Security Policy (CSP) with reporting enabled to surface inline script violations that indicate XSS attempts.
- Review browser console error telemetry and Real User Monitoring data for anomalous script execution on pages using the plugin.
Monitoring Recommendations
- Monitor outbound requests from user browsers to unfamiliar domains following visits to the WordPress site, indicating possible data exfiltration.
- Alert on WordPress administrator sessions performing actions from unusual IP addresses or user agents shortly after page loads.
- Track plugin version changes and plugin updates across managed WordPress fleets to confirm patch adoption.
How to Mitigate CVE-2026-57376
Immediate Actions Required
- Update ElementInvader Addons for Elementor to a version later than 1.4.3 as soon as the vendor releases a patched release.
- If no patched version is available, deactivate and remove the plugin until a fix is published.
- Rotate WordPress administrator credentials and invalidate active sessions if suspicious activity is observed.
Patch Information
The advisory identifies ElementInvader Addons for Elementor versions through 1.4.3 as affected. Consult the Patchstack Vulnerability Report for the latest fixed version guidance from the vendor.
Workarounds
- Enforce a strict Content Security Policy that blocks inline scripts and restricts script sources to trusted origins.
- Deploy a WordPress-aware web application firewall with rules that inspect query strings and URL fragments for XSS payloads.
- Restrict WordPress administrator access to trusted IP ranges and require multi-factor authentication to limit the impact of session hijacking.
# Example: identify vulnerable plugin version via WP-CLI
wp plugin get elementinvader-addons-for-elementor --field=version
# Deactivate the plugin until a patch is available
wp plugin deactivate elementinvader-addons-for-elementor
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
