CVE-2025-26907
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Estatik Mortgage Calculator WordPress plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the compromised calculator, their browsers execute the attacker's code. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Estatik Mortgage Calculator 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 credentials, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers inject malicious scripts to steal user session cookies, redirect visitors to phishing pages, or display unwanted advertisements.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Exploitation requires the ability to submit malicious input to the mortgage calculator, which may require some level of access depending on implementation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.13 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Estatik Mortgage Calculator'. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.0.13+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
Implement WAF Rules
allConfigure web application firewall to block XSS payloads targeting the mortgage calculator
🧯 If You Can't Patch
- Remove the mortgage calculator shortcodes from all pages/posts
- Implement Content Security Policy (CSP) headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Estatik Mortgage Calculator versionCheck Version:
wp plugin list --name='estatik-mortgage-calculator' --field=versionVerify Fix Applied:
Verify plugin version is 2.0.13 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to mortgage calculator endpoints with script tags
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Outbound connections to suspicious domains after visiting mortgage calculator pages
- Unexpected JavaScript execution in browser developer tools
SIEM Query:
source="web_server" AND ("mortgage-calculator" OR "estatik") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")