CVE-2025-67544
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Shopkeeper Extender WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all WordPress sites running Shopkeeper Extender versions before 7.0. The vulnerability enables attackers to steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- Shopkeeper Extender WordPress Plugin
⚠️ 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 sites, install backdoors, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, redirect users to phishing pages, or perform unauthorized actions on behalf of logged-in users.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing any client-side code injection.
🎯 Exploit Status
Stored XSS vulnerabilities typically require some level of user interaction or content submission capability, but once exploited, the payload persists and affects all subsequent visitors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.0
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Shopkeeper Extender' and check if update is available. 4. Click 'Update Now' to upgrade to version 7.0 or higher. 5. Verify the plugin version after update.
🔧 Temporary Workarounds
Disable Shopkeeper Extender Plugin
allTemporarily disable the vulnerable plugin until patching is possible
wp plugin deactivate shopkeeper-extender
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Enable WordPress security plugins with XSS protection features
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Shopkeeper Extender version. If version is below 7.0, the site is vulnerable.Check Version:
wp plugin get shopkeeper-extender --field=versionVerify Fix Applied:
After updating, verify Shopkeeper Extender shows version 7.0 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints with script tags or JavaScript payloads
- Multiple failed attempts to submit malicious content
Network Indicators:
- HTTP requests containing <script> tags or JavaScript code in parameters
- Unexpected outbound connections from user browsers after visiting affected pages
SIEM Query:
source="wordpress.log" AND ("shopkeeper-extender" OR "shopkeeper") AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")