CVE-2025-11263
📋 TL;DR
The Link Whisper Free WordPress plugin contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts via the type parameter. This affects all WordPress sites using Link Whisper Free version 0.8.8 or earlier. Attackers can exploit this by tricking users into clicking specially crafted links.
💻 Affected Systems
- Link Whisper Free 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, perform actions on behalf of authenticated users, or deliver malware payloads.
Likely Case
Attackers will use this for session hijacking, credential theft, or redirecting users to phishing pages.
If Mitigated
With proper web application firewalls and user education about suspicious links, impact is limited to individual user sessions.
🎯 Exploit Status
Exploitation requires user interaction (clicking a link) but is otherwise straightforward. Public proof-of-concept code is available in the WordPress patch commit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.8.9 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3401477/link-whisper/trunk/core/Wpil/Report.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Link Whisper Free and click 'Update Now'. 4. Verify the plugin version is 0.8.9 or higher.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock malicious type parameter values containing script tags or JavaScript
Disable Plugin
linuxTemporarily deactivate Link Whisper Free until patched
wp plugin deactivate link-whisper
🧯 If You Can't Patch
- Implement Content Security Policy headers to restrict script execution
- Deploy a web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Link Whisper Free version. If version is 0.8.8 or lower, you are vulnerable.Check Version:
wp plugin get link-whisper --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 0.8.9 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing 'type=' parameter with script tags or JavaScript code
- Unusual referrer URLs containing script payloads
Network Indicators:
- HTTP GET requests with suspicious type parameter values
- URLs containing encoded script tags in query strings
SIEM Query:
http.url:*type=* AND (http.url:*script* OR http.url:*javascript* OR http.url:*onload* OR http.url:*onerror*)