CVE-2025-64381
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Booking Calendar WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. All WordPress sites using Booking Calendar versions up to and including 10.14.7 are affected. The vulnerability requires user interaction but can lead to session hijacking, defacement, or malware distribution.
💻 Affected Systems
- Booking Calendar 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, redirect visitors to malicious sites, or deploy ransomware payloads to site visitors.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, perform actions on behalf of authenticated users, or deface booking pages with malicious content.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution.
🎯 Exploit Status
Exploitation requires the attacker to have the ability to create or modify bookings. The vulnerability details are publicly disclosed, making exploitation straightforward for attackers with booking access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.14.8 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Booking Calendar and click 'Update Now'. 4. Verify the plugin version is 10.14.8 or higher. 5. Clear any caching plugins or CDN caches.
🔧 Temporary Workarounds
Disable Booking Calendar Plugin
allTemporarily disable the vulnerable plugin until patching is possible
wp plugin deactivate booking
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads in booking parameters
🧯 If You Can't Patch
- Restrict booking creation/modification to trusted users only
- Implement Content Security Policy (CSP) headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins → Booking Calendar version. If version is 10.14.7 or lower, you are vulnerable.Check Version:
wp plugin get booking --field=versionVerify Fix Applied:
After updating, verify the plugin shows version 10.14.8 or higher in WordPress admin. Test booking functionality to ensure it still works properly.📡 Detection & Monitoring
Log Indicators:
- Unusual booking submissions with script tags or JavaScript payloads
- Multiple failed booking attempts with suspicious parameters
Network Indicators:
- HTTP requests to booking endpoints containing script tags or JavaScript in parameters
- Outbound connections to suspicious domains from booking pages
SIEM Query:
source="wordpress.log" AND ("booking" OR "calendar") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")