CVE-2025-26762
📋 TL;DR
A stored cross-site scripting (XSS) vulnerability in WooCommerce allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. This affects all WooCommerce installations from unknown versions through 9.7.0. Attackers could steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
💻 Affected Systems
- WooCommerce
⚠️ 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 could steal administrator session cookies, take over WordPress admin accounts, install backdoors, deface websites, or steal customer payment information if payment forms are affected.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect users to phishing sites, or perform limited actions within the context of affected users' sessions.
If Mitigated
With proper input validation and output encoding, the malicious payloads would be neutralized before reaching users, preventing script execution.
🎯 Exploit Status
Stored XSS vulnerabilities typically require some level of access to inject payloads, but once injected, exploitation is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.7.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WooCommerce and click 'Update Now' if available. 4. Alternatively, download WooCommerce 9.7.1+ from WordPress.org and manually update.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom input validation to sanitize all user inputs before processing.
Add custom sanitization filters in WordPress functions.php or create a custom plugin with input validation logic.
Content Security Policy
allImplement CSP headers to restrict script execution sources.
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to WordPress functions.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payload patterns
- Disable or restrict user input fields that could be vulnerable until patching is possible
🔍 How to Verify
Check if Vulnerable:
Check WooCommerce version in WordPress admin under Plugins → Installed Plugins. If version is 9.7.0 or earlier, you are vulnerable.Check Version:
wp plugin list --name=woocommerce --field=version (WP-CLI) or check WordPress admin plugins pageVerify Fix Applied:
After updating, verify WooCommerce version shows 9.7.1 or later in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with JavaScript payloads in parameters
- Multiple failed input validation attempts
- Unexpected script tags in database content fields
Network Indicators:
- HTTP requests containing <script> tags or JavaScript event handlers in parameters
- Unusual outbound connections following page views
SIEM Query:
source="web_logs" AND (http_method="POST" AND (url_query="*<script>*" OR url_query="*javascript:*" OR url_query="*onerror=*" OR url_query="*onload=*"))