CVE-2025-9859
📋 TL;DR
The Fintelligence Calculator WordPress plugin has a stored XSS vulnerability in all versions up to 1.0.3. Authenticated attackers with contributor-level access or higher can inject malicious scripts via the plugin's shortcode attributes, which execute when users view affected pages. This affects all WordPress sites using vulnerable versions of this plugin.
💻 Affected Systems
- Fintelligence 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 admin credentials, redirect users to malicious sites, deface websites, or install backdoors for persistent access.
Likely Case
Attackers with contributor accounts inject malicious scripts to steal user session cookies or redirect visitors to phishing pages.
If Mitigated
With proper user access controls and content security policies, impact is limited to potential defacement of affected pages.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.4 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/fintelligence-calculator
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Fintelligence Calculator. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install fresh version from WordPress repository.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate fintelligence-calculator
Remove Contributor Access
allTemporarily restrict contributor-level user creation/access
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Review and audit all user accounts with contributor-level or higher permissions
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Fintelligence Calculator version. If version is 1.0.3 or lower, you are vulnerable.Check Version:
wp plugin get fintelligence-calculator --field=versionVerify Fix Applied:
After update, verify plugin version is 1.0.4 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php with fintelligence-calculator parameters
- Multiple page edits by contributor-level users in short timeframe
Network Indicators:
- Script tags with unusual attributes in page responses containing 'fintelligence-calculator'
SIEM Query:
source="wordpress.log" AND "fintelligence-calculator" AND ("POST" OR "update")