CVE-2025-24723
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Booking Calendar Contact Form WordPress plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the injected scripts, the attacker can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Booking Calendar Contact Form 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, gain administrative access to WordPress sites, install backdoors, deface websites, or steal sensitive user data.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, redirect users to phishing sites, or perform actions as authenticated users.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before being stored or displayed to users.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited. While no public PoC is confirmed, the vulnerability type is well-understood and easily weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.56 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Booking Calendar Contact Form'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.2.56+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate booking-calendar-contact-form
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads
ModSecurity: SecRule ARGS "<script" "id:1001,phase:2,deny"
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Enable WordPress security plugins with XSS protection features
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Booking Calendar Contact Form versionCheck Version:
wp plugin get booking-calendar-contact-form --field=versionVerify Fix Applied:
Verify plugin version is 1.2.56 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints containing script tags
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious script payloads in parameters
- Unexpected JavaScript execution from plugin pages
SIEM Query:
source="web_logs" AND ("booking-calendar" OR "contact-form") AND ("<script" OR "javascript:" OR "onerror=" OR "onload=")