CVE-2025-24574: PeproDev WooCommerce XSS Vulnerability

CVE-2025-24574 Overview

CVE-2025-24574 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the PeproDev WooCommerce Receipt Uploader plugin for WordPress. This vulnerability arises from improper neutralization of user-supplied input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

The vulnerability affects PeproDev WooCommerce Receipt Uploader versions through 2.6.9. When exploited, an attacker can craft malicious URLs containing JavaScript payloads that, when clicked by authenticated users, execute arbitrary scripts within their browser context.

Critical Impact

Successful exploitation could allow attackers to steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or deface web content within the vulnerable WordPress installation.

Affected Products

• PeproDev WooCommerce Receipt Uploader versions up to and including 2.6.9
• WordPress sites running the pepro-bacs-receipt-upload-for-woocommerce plugin

Discovery Timeline

• 2025-02-03 - CVE-2025-24574 published to NVD
• 2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-24574

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). Reflected XSS vulnerabilities occur when user-controlled input is echoed back in the HTTP response without proper sanitization or encoding. In the context of this WordPress plugin, the vulnerability allows attackers to inject malicious JavaScript through specially crafted request parameters.

The PeproDev WooCommerce Receipt Uploader plugin, which provides receipt upload functionality for WooCommerce Bank Account Payment System (BACS) orders, fails to properly sanitize certain input parameters before rendering them in the page output. This creates an attack surface where malicious scripts can be injected and executed in the browsers of users who interact with crafted malicious links.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the plugin's handling of user-supplied data. WordPress plugins must implement proper escaping functions such as esc_html(), esc_attr(), or wp_kses() when outputting user-controlled data to prevent XSS attacks. The affected versions of this plugin fail to implement adequate sanitization, allowing raw user input to be reflected in the page output.

Attack Vector

The attack vector for this Reflected XSS vulnerability requires social engineering to be successful. An attacker must craft a malicious URL containing JavaScript payload and convince a victim to click on it. The attack flow typically follows this pattern:

1. Attacker identifies a vulnerable parameter in the plugin that reflects user input
2. Attacker constructs a malicious URL with embedded JavaScript payload
3. Attacker distributes the malicious link via email, social media, or other channels
4. Victim clicks the link while authenticated to the WordPress site
5. Malicious script executes in the victim's browser context with their session privileges

The vulnerability is particularly dangerous for WordPress administrators, as successful exploitation could lead to administrative session hijacking, allowing attackers to take full control of the WordPress installation.

Detection Methods for CVE-2025-24574

Indicators of Compromise

• Unusual URL parameters containing JavaScript code or encoded script payloads in web server access logs
• Unexpected redirects or pop-up windows when accessing WooCommerce receipt upload functionality
• Reports from users about suspicious behavior when clicking links related to the receipt uploader feature
• Web Application Firewall (WAF) alerts for XSS pattern matches in request parameters

Detection Strategies

• Review web server access logs for requests containing suspicious JavaScript patterns such as <script>, javascript:, or encoded variants targeting the pepro-bacs-receipt-upload-for-woocommerce plugin endpoints
• Deploy Web Application Firewall (WAF) rules to detect and block common XSS payloads in request parameters
• Implement Content Security Policy (CSP) headers to restrict script execution sources and detect policy violations
• Monitor browser console errors for blocked inline script execution attempts

Monitoring Recommendations

• Enable detailed logging for WordPress plugin activity, particularly focusing on the receipt uploader functionality
• Configure alerts for WAF rule triggers related to XSS attack patterns
• Implement real-time monitoring of CSP violation reports to detect exploitation attempts
• Regularly audit plugin versions across WordPress installations to identify vulnerable deployments

How to Mitigate CVE-2025-24574

Immediate Actions Required

• Update the PeproDev WooCommerce Receipt Uploader plugin to the latest patched version immediately
• If an update is not available, consider temporarily disabling the plugin until a patch is released
• Review web server logs for any evidence of exploitation attempts
• Implement Web Application Firewall rules to block XSS payloads targeting this plugin

Patch Information

Organizations should update the PeproDev WooCommerce Receipt Uploader plugin to a version newer than 2.6.9 that addresses this vulnerability. Check the Patchstack WordPress Vulnerability Database for the latest information on available patches and remediation guidance.

WordPress administrators should:

1. Log into the WordPress admin dashboard
2. Navigate to Plugins > Installed Plugins
3. Check the current version of PeproDev WooCommerce Receipt Uploader
4. Update to the latest available version or remove the plugin if no patch is available

Workarounds

• Implement Content Security Policy (CSP) headers to restrict inline script execution: Content-Security-Policy: script-src 'self';
• Deploy a Web Application Firewall with XSS protection rules enabled
• Restrict access to the plugin functionality to authenticated and trusted users only
• Consider using a WordPress security plugin that provides virtual patching capabilities until an official fix is available

# Add CSP headers to Apache configuration
Header set Content-Security-Policy "script-src 'self'; object-src 'none';"

# Or for Nginx configuration
add_header Content-Security-Policy "script-src 'self'; object-src 'none';";