CVE-2025-57903
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WooCommerce Additional Fees On Checkout plugin allows attackers to inject malicious scripts that execute when other users view affected pages. WordPress sites using the vulnerable plugin versions are affected, potentially compromising user sessions and site integrity. The vulnerability requires administrative access to exploit but creates persistent threats.
💻 Affected Systems
- WPSuperiors Developer WooCommerce Additional Fees On Checkout (Free)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers with admin access could inject malicious scripts that steal session cookies, redirect users to phishing sites, or perform actions as authenticated users, potentially leading to complete site takeover.
Likely Case
Malicious administrators or compromised admin accounts could inject scripts that steal user data, deface the site, or redirect users to malicious content.
If Mitigated
With proper access controls and input validation, the impact is limited to potential data leakage from users who view malicious content.
🎯 Exploit Status
Exploitation requires administrative access to the WordPress dashboard where the plugin settings can be modified with malicious payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.5.0
Restart Required: No
Instructions:
1. Log into WordPress admin dashboard. 2. Navigate to Plugins > Installed Plugins. 3. Find 'WooCommerce Additional Fees On Checkout (Free)'. 4. Click 'Update Now' if available. 5. If no update is available, deactivate and delete the plugin, then install the latest version from WordPress repository.
🔧 Temporary Workarounds
Disable Plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate woo-additional-fees-on-checkout-wordpress
Restrict Admin Access
allLimit administrative access to trusted users only and implement strong authentication
🧯 If You Can't Patch
- Remove the plugin entirely and find alternative solutions for checkout fee functionality
- Implement web application firewall (WAF) rules to block XSS payloads in plugin parameters
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin dashboard > Plugins > Installed Plugins for 'WooCommerce Additional Fees On Checkout (Free)' version 1.5.0 or earlierCheck Version:
wp plugin get woo-additional-fees-on-checkout-wordpress --field=versionVerify Fix Applied:
Verify plugin version is greater than 1.5.0 in WordPress admin dashboard📡 Detection & Monitoring
Log Indicators:
- Unusual modifications to plugin settings by admin users
- Suspicious JavaScript payloads in plugin configuration data
Network Indicators:
- Unexpected JavaScript execution on checkout pages
- External script loads from checkout-related pages
SIEM Query:
source="wordpress" AND (plugin="woo-additional-fees-on-checkout" OR plugin_name="WooCommerce Additional Fees On Checkout") AND (action="activated" OR action="deactivated" OR action="updated")