CVE-2025-58017: Ultimate Store Kit Elementor XSS Flaw

CVE-2025-58017 Overview

CVE-2025-58017 is a stored cross-site scripting (XSS) vulnerability in the bdthemes Ultimate Store Kit Elementor Addons plugin for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation, classified as [CWE-79]. All plugin versions up to and including 2.8.6 are affected. An authenticated attacker with low privileges can inject persistent JavaScript payloads that execute in the browsers of users who view the affected pages. Because the scope is changed, the injected script can affect resources beyond the vulnerable component.

Critical Impact
Authenticated attackers can store malicious scripts that execute against site visitors and administrators, enabling session theft, credential harvesting, and administrative account takeover.

Affected Products

bdthemes Ultimate Store Kit Elementor Addons versions through 2.8.6
WordPress installations with the ultimate-store-kit plugin enabled
Sites relying on Elementor page builder with this addon integrated

Discovery Timeline

2025-09-22 - CVE-2025-58017 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-58017

Vulnerability Analysis

The vulnerability resides in how the Ultimate Store Kit Elementor Addons plugin processes user-controlled input before rendering it in HTML output. Input passed through plugin widget configurations is not properly sanitized or escaped, allowing an attacker to embed arbitrary JavaScript payloads. Once stored, the payload executes each time a user renders the affected page component.

Exploitation requires authenticated access with low privileges, meaning contributor or editor accounts on multi-user WordPress installations present a realistic attack surface. User interaction is also required, typically an administrator or visitor loading the affected page. The scope change indicates that the executed script can access resources outside the vulnerable plugin, including the WordPress admin session context.

Stored XSS in a widely deployed Elementor addon presents durable risk because payloads persist in the database. Site owners running vulnerable versions should treat any content authored by lower-privileged users as untrusted until remediation is complete. Refer to the Patchstack Vulnerability Report for additional technical context.

Root Cause

The plugin fails to apply appropriate sanitization functions such as wp_kses_post() or output escaping via esc_html() and esc_attr() when handling widget input fields. Attacker-controlled strings containing HTML or JavaScript are stored and later rendered verbatim in the page DOM.

Attack Vector

An attacker with a low-privileged authenticated account crafts a widget configuration containing a JavaScript payload embedded in a text, URL, or attribute field. The payload is persisted in the WordPress database. When a site visitor or administrator loads a page containing the malicious widget, the browser executes the injected script under the site origin.

The vulnerability is remotely exploitable but requires user interaction and prior authentication. No verified proof-of-concept exploitation code has been published in the referenced advisory.

Detection Methods for CVE-2025-58017

Indicators of Compromise

Widget content containing <script> tags, javascript: URIs, or inline event handlers such as onerror= and onload= within Ultimate Store Kit widgets
Unexpected outbound requests from browsers loading pages built with the plugin
New or modified WordPress administrator accounts created shortly after low-privileged users edited pages
Unusual HTML entities or encoded payloads in wp_postmeta records tied to plugin widgets

Detection Strategies

Query the WordPress database for plugin widget metadata containing suspicious patterns such as <script, onerror=, or document.cookie
Review web server access logs for POST requests to /wp-admin/admin-ajax.php and Elementor editor endpoints from non-administrative accounts
Monitor browser Content Security Policy (CSP) violation reports for inline script execution on pages built with Elementor

Monitoring Recommendations

Enable WordPress audit logging to track widget modifications by contributor and editor roles
Alert on creation of new administrative accounts or role escalations following content edits
Baseline expected outbound domains from rendered pages and flag deviations that may indicate script exfiltration

How to Mitigate CVE-2025-58017

Immediate Actions Required

Update Ultimate Store Kit Elementor Addons to a version later than 2.8.6 once released by bdthemes
Audit all content created by low-privileged users since the plugin was installed for embedded scripts
Rotate WordPress administrator credentials and invalidate active sessions if compromise is suspected
Restrict widget authoring capabilities to trusted, high-privilege accounts until a patched version is deployed

Patch Information

At the time of publication, the vendor advisory tracked via Patchstack lists all versions through 2.8.6 as affected. Administrators should monitor the plugin repository for a fixed release and apply it as soon as it becomes available.

Workarounds

Deactivate the Ultimate Store Kit Elementor Addons plugin until an official patch is installed
Deploy a web application firewall (WAF) rule to block requests containing script tags or JavaScript URI schemes targeting Elementor endpoints
Implement a strict Content Security Policy that disallows inline scripts and restricts allowed script sources
Remove or downgrade the WordPress roles of accounts that do not require content authoring privileges

bash

# Example nginx snippet enforcing a restrictive Content Security Policy
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self';" always;