CVE-2025-46464: Ads Pro Plugin Stored XSS Vulnerability

CVE-2025-46464 Overview

CVE-2025-46464 is a stored cross-site scripting (XSS) vulnerability in the scripteo Ads Pro plugin for WordPress (ap-plugin-scripteo). The flaw affects all versions of Ads Pro up to and including 5.0. Authenticated attackers with low privileges can inject persistent JavaScript payloads that execute in the browsers of users who view the affected pages. The issue is classified under CWE-79: Improper Neutralization of Input During Web Page Generation.

Critical Impact

Attackers can persist malicious scripts in the site database, leading to session theft, administrative account compromise, and delivery of malicious content to site visitors.

Affected Products

• scripteo Ads Pro plugin for WordPress
• All versions from n/a through 5.0
• WordPress sites with ap-plugin-scripteo installed and active

Discovery Timeline

• 2025-05-16 - CVE-2025-46464 published to the National Vulnerability Database
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-46464

Vulnerability Analysis

The Ads Pro plugin fails to properly neutralize user-supplied input before storing it and rendering it back to the browser. An authenticated user with at least contributor-level access can submit crafted input containing HTML or JavaScript. The plugin persists this input and later returns it as part of a rendered page without adequate encoding.

Because the payload is stored server-side, every subsequent page render delivers the script to viewers. The vulnerability requires user interaction to trigger, but the scope is changed, meaning the injected script can affect resources beyond the vulnerable component, including administrative sessions.

Root Cause

The root cause is missing or insufficient output encoding on data written through the plugin's input handlers. The plugin does not apply WordPress sanitization primitives such as wp_kses, esc_html, or esc_attr on all user-controlled fields before rendering them in the DOM.

Attack Vector

An authenticated attacker submits ad configuration or content containing a script payload through the plugin interface. When an administrator or site visitor loads a page that renders the stored value, the browser executes the payload in the site's origin. Successful exploitation can hijack sessions, forge administrative actions, or redirect users to attacker-controlled infrastructure.

No verified proof-of-concept code is publicly available. See the Patchstack XSS Vulnerability Advisory for additional technical context.

Detection Methods for CVE-2025-46464

Indicators of Compromise

• Unexpected <script>, <iframe>, or event-handler attributes (onerror, onload) stored in WordPress post meta or plugin-specific database tables tied to ap-plugin-scripteo
• Outbound requests from browsers loading ad-serving pages to unfamiliar domains not associated with legitimate ad networks
• New or modified administrator accounts created shortly after low-privilege users edited ad content

Detection Strategies

• Query the WordPress database for plugin-controlled fields containing HTML tags, JavaScript event handlers, or encoded payloads such as <script>
• Review web server access logs for POST requests to Ads Pro endpoints followed by GET requests loading the affected pages
• Correlate authenticated contributor or author session activity with anomalous admin-session behavior

Monitoring Recommendations

• Enable WordPress audit logging for plugin content changes and privilege modifications
• Deploy Content Security Policy (CSP) reporting to surface unauthorized inline script execution
• Monitor plugin file integrity and database changes for the ap-plugin-scripteo component

How to Mitigate CVE-2025-46464

Immediate Actions Required

• Update the scripteo Ads Pro plugin to a version later than 5.0 once the vendor publishes a fixed release
• Restrict contributor, author, and editor accounts to trusted users only, and audit existing accounts for anomalies
• Review all existing ad entries in the database and remove any content containing script tags or event-handler attributes

Patch Information

At the time of publication, the vendor advisory tracked through Patchstack identifies affected versions up to and including 5.0. Administrators should consult the Patchstack XSS Vulnerability Advisory and the plugin vendor page for updated patch availability.

Workarounds

• Deactivate the Ads Pro plugin until a patched version is available if the plugin is not business-critical
• Enforce a strict Content Security Policy that blocks inline scripts and untrusted script sources
• Place a web application firewall (WAF) rule in front of WordPress to filter script payloads submitted to plugin endpoints

# Example CSP header applied via .htaccess to block inline scripts
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"