CVE-2025-1505: Berocket Product Filters XSS Vulnerability

CVE-2025-1505 Overview

CVE-2025-1505 is a Reflected Cross-Site Scripting (XSS) vulnerability in the Berocket Advanced AJAX Product Filters plugin for WordPress. The flaw affects all versions up to and including 1.6.8.1. It resides in the handling of the nonce parameter, which the plugin fails to sanitize on input and escape on output. Unauthenticated attackers can craft URLs that inject arbitrary JavaScript into rendered pages. Successful exploitation requires user interaction, such as a victim clicking a malicious link. The issue is classified under CWE-79.

Critical Impact
Unauthenticated attackers can execute arbitrary JavaScript in a victim's browser session, enabling session theft, credential harvesting, or forced administrative actions on WordPress sites running the vulnerable plugin.

Affected Products

Berocket Advanced AJAX Product Filters plugin for WordPress
All versions up to and including 1.6.8.1
WordPress sites running WooCommerce with this plugin installed

Discovery Timeline

2025-02-28 - CVE-2025-1505 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-1505

Vulnerability Analysis

The vulnerability is a classic Reflected Cross-Site Scripting flaw in a WooCommerce filtering plugin. The plugin accepts a nonce value through an HTTP request parameter and reflects that value back into the HTML response without applying proper input sanitization or output escaping. Because the reflection occurs before the value reaches a browser context, attacker-controlled markup and script content execute in the security context of the vulnerable WordPress site.

The attack requires user interaction. Victims must be induced to click a specially crafted URL, typically delivered through phishing, forum posts, or malicious advertising. When the victim's browser renders the response, the injected script runs with the privileges of that user on the target site. If the victim is an authenticated administrator, the attacker can leverage the script to perform privileged actions, exfiltrate session cookies, or pivot into stored persistence through admin-only endpoints. According to the enriched threat data, no public exploit is available and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Root Cause

The root cause is insufficient input sanitization combined with missing output escaping around the nonce parameter. The plugin trusts the parameter as an opaque token but never validates its format, and it emits the raw value into HTML without functions such as esc_attr() or esc_html(). The fix landed in the plugin's includes/wizard.php component, referenced in the vendor changeset at WordPress Plugin Changeset 3245830.

Attack Vector

The attack is network-based and unauthenticated. An attacker constructs a URL to a page served by the vulnerable plugin, appending a malicious payload to the nonce parameter. The payload is delivered to a victim through social engineering. On click, the response reflects the payload into the DOM and the injected script executes. Detailed technical analysis is available in the Wordfence Vulnerability Analysis.

Detection Methods for CVE-2025-1505

Indicators of Compromise

Web server access logs containing requests to plugin endpoints with a nonce parameter carrying HTML tags, <script>, javascript:, or URL-encoded equivalents such as %3Cscript%3E
Referer headers pointing to external domains hosting phishing pages that link to WooCommerce filter URLs
Unusual outbound requests from browsers immediately after visiting filter pages, indicating cookie or token exfiltration

Detection Strategies

Inventory WordPress installations and identify sites running berocket/advanced_ajax_product_filters at version 1.6.8.1 or earlier
Deploy web application firewall rules that block reflected XSS payload patterns in query parameters targeting the plugin's request handlers
Correlate outbound network telemetry with client browser sessions to identify token exfiltration following visits to WooCommerce filter URLs

Monitoring Recommendations

Enable verbose HTTP access logging on WordPress front-end infrastructure and retain logs for retrospective analysis
Alert on 200-response requests where the query string contains angle brackets, on*= handlers, or common XSS keywords
Monitor administrator session activity for unexpected privilege actions following user clicks on external links

How to Mitigate CVE-2025-1505

Immediate Actions Required

Update the Advanced AJAX Product Filters plugin to a version later than 1.6.8.1 that includes the fix from changeset 3245830
If an update cannot be applied immediately, deactivate the plugin on affected WordPress sites until patched
Invalidate active administrator sessions and rotate WordPress user credentials if suspicious clicks or logs are observed

Patch Information

The vendor addressed the issue in the includes/wizard.php file. The corrective code is available in the official WordPress Plugin Changeset 3245830. Administrators should upgrade through the WordPress plugin manager to the latest release published after this changeset.

Workarounds

Restrict access to WordPress admin accounts and enforce multi-factor authentication to reduce the value of a hijacked session
Deploy a Content Security Policy (CSP) that disallows inline scripts to blunt reflected script execution
Configure a web application firewall to filter nonce parameter values containing HTML or script syntax until the patch is applied

bash

# Example WordPress CLI update commands
wp plugin update woocommerce-ajax-filters
wp plugin list --name=woocommerce-ajax-filters --fields=name,status,version