CVE-2025-8492
📋 TL;DR
The Salon Booking System WordPress plugin has an authorization bypass vulnerability that allows unauthenticated attackers to execute AJAX actions, including limited file uploads. This affects all WordPress sites using this plugin up to version 10.20. Attackers can modify data without proper authentication.
💻 Affected Systems
- Salon Booking System - Appointment Scheduling for Salons, Spas & Small Businesses 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 upload malicious files to the server, potentially leading to remote code execution, data manipulation, or website defacement.
Likely Case
Limited file uploads that could be used to store malicious scripts or deface the website, or unauthorized modification of booking data.
If Mitigated
If proper web application firewalls and file upload restrictions are in place, impact is limited to potential data manipulation within the plugin's scope.
🎯 Exploit Status
Exploitation requires sending crafted AJAX requests to vulnerable endpoints without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 10.20
Vendor Advisory: https://plugins.trac.wordpress.org/browser/salon-booking-system
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find Salon Booking System plugin. 4. Click 'Update Now' if available. 5. If no update shows, manually download latest version from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable AJAX endpoints
allAdd capability checks to vulnerable AJAX functions or disable them via .htaccess/nginx rules
# Example .htaccess rule to block specific AJAX endpoints
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php [NC]
RewriteCond %{QUERY_STRING} action=sln_ajax [NC]
RewriteRule ^ - [F,L]
🧯 If You Can't Patch
- Temporarily disable the Salon Booking System plugin until patched
- Implement web application firewall rules to block unauthenticated AJAX requests to the vulnerable endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Salon Booking System version. If version is 10.20 or lower, you are vulnerable.Check Version:
wp plugin list --name='salon-booking-system' --field=versionVerify Fix Applied:
After updating, verify plugin version is higher than 10.20. Test that unauthenticated AJAX requests to sln_ajax endpoints now return proper authorization errors.📡 Detection & Monitoring
Log Indicators:
- Multiple 200 OK responses to /wp-admin/admin-ajax.php with action=sln_ajax from unauthenticated users
- File upload attempts via AJAX to plugin directories
Network Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with sln_ajax action from external IPs without authentication cookies
SIEM Query:
source="web_logs" AND uri="/wp-admin/admin-ajax.php" AND query="action=sln_ajax" AND NOT user_agent="WordPress/*" AND status=200