CVE-2025-49951
📋 TL;DR
This Cross-Site Scripting (XSS) vulnerability in the gAppointments WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. It affects all WordPress sites running gAppointments version 1.14.1 or earlier. The vulnerability is reflected, meaning the malicious script is included in the URL or form data.
💻 Affected Systems
- gAppointments 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 session cookies, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users including administrators.
Likely Case
Attackers craft malicious links containing JavaScript payloads that execute when victims click them, potentially stealing session cookies or redirecting to phishing sites.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited via crafted URLs. No authentication required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.14.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find gAppointments and click 'Update Now'. 4. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Input Validation Filter
allAdd custom input validation to sanitize user inputs before processing
Add sanitization filters in WordPress functions.php or plugin code: esc_html(), esc_attr(), wp_kses()
Content Security Policy
allImplement CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or use WordPress security plugins to configure CSP
🧯 If You Can't Patch
- Disable the gAppointments plugin immediately
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for gAppointments version. If version is 1.14.1 or lower, you are vulnerable.Check Version:
wp plugin list --name=gappointments --field=version (if WP-CLI installed) or check WordPress admin plugins pageVerify Fix Applied:
After updating, verify gAppointments version shows 1.14.2 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code in parameters
- Multiple failed requests with suspicious parameters to gAppointments endpoints
Network Indicators:
- HTTP requests with suspicious parameters like <script>, javascript:, or encoded payloads
SIEM Query:
source="web_logs" AND (uri="*gappointments*" AND (param="*<script>*" OR param="*javascript:*" OR param="*onerror=*"))