CVE-2025-46499
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the PayPal Express Checkout WordPress plugin allows attackers to inject malicious scripts into web pages. When exploited, these scripts execute in victims' browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- PayPal Express Checkout 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, deface websites, or redirect visitors to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript that steals user session cookies or credentials when users visit compromised pages, leading to account takeover and unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers, preventing execution.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited, though specific exploit details for this CVE aren't publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find PayPal Express Checkout plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 2.1.3+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patched
wp plugin deactivate paypal-express-checkout
Web Application Firewall (WAF)
allConfigure WAF to block XSS payloads targeting the plugin
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security headers like X-XSS-Protection and X-Content-Type-Options
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → PayPal Express Checkout version numberCheck Version:
wp plugin get paypal-express-checkout --field=versionVerify Fix Applied:
Verify plugin version is 2.1.3 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- Suspicious JavaScript in form submissions
Network Indicators:
- Malicious script payloads in HTTP requests
- Unexpected outbound connections after page loads
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "paypal-express-checkout") AND (http_method="POST" AND (request_body CONTAINS "<script>" OR request_body CONTAINS "javascript:"))