CVE-2025-13754
📋 TL;DR
This vulnerability allows unauthenticated attackers to access sensitive configuration data from the Simply Schedule Appointments WordPress plugin. All WordPress sites using this plugin up to version 1.6.9.16 are affected. The exposed information includes staff names, business details, and potentially API keys for external services in premium versions.
💻 Affected Systems
- Simply Schedule Appointments 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 obtain API keys for external services (payment processors, calendars, etc.), leading to unauthorized access to third-party systems, financial fraud, or data breaches beyond the WordPress site.
Likely Case
Attackers harvest business information, staff names, and operational details for social engineering, targeted phishing, or competitive intelligence gathering.
If Mitigated
With proper authentication controls, only authorized administrators can access plugin configuration, preventing information leakage.
🎯 Exploit Status
Exploitation requires only a simple HTTP GET request to the vulnerable endpoint without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.9.17 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3421427/simply-schedule-appointments/trunk/includes/class-shortcodes.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Simply Schedule Appointments. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Block Vulnerable Endpoint via .htaccess
linuxPrevent access to the vulnerable REST API endpoint using web server configuration.
# Add to .htaccess file
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteRule ^wp-json/ssa/v1/embed-inner-admin - [F,L]
</IfModule>
Disable Plugin
allTemporarily disable the plugin until patched, though this will break appointment booking functionality.
wp plugin deactivate simply-schedule-appointments
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block requests to /wp-json/ssa/v1/embed-inner-admin
- Restrict access to WordPress REST API endpoints using authentication or IP whitelisting
🔍 How to Verify
Check if Vulnerable:
Send GET request to https://your-site.com/wp-json/ssa/v1/embed-inner-admin. If it returns plugin configuration data without authentication, the site is vulnerable.Check Version:
wp plugin get simply-schedule-appointments --field=versionVerify Fix Applied:
After updating, the same endpoint should return 401/403 error or require authentication.📡 Detection & Monitoring
Log Indicators:
- HTTP 200 responses to GET /wp-json/ssa/v1/embed-inner-admin from unauthenticated users
Network Indicators:
- Unusual traffic patterns to WordPress REST API endpoints, especially from unknown IPs
SIEM Query:
source="web_logs" AND uri="/wp-json/ssa/v1/embed-inner-admin" AND response_code=200 AND user="-"