CVE-2025-27329
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in the EZ InLinkz linkup WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability affects all WordPress sites using the plugin from version n/a through 0.18. Attackers can steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
💻 Affected Systems
- EZ InLinkz linkup 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, take over WordPress sites, install backdoors, deface websites, or redirect visitors to phishing/malware sites.
Likely Case
Attackers steal user session cookies, perform actions as authenticated users, or redirect users to malicious content.
If Mitigated
With proper Content Security Policy (CSP) headers and input validation, impact is limited to specific page contexts where the vulnerability exists.
🎯 Exploit Status
DOM-based XSS vulnerabilities are commonly exploited and require minimal technical skill to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.19 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'EZ InLinkz linkup' plugin. 4. Click 'Update Now' if update is available. 5. If no update appears, manually download version 0.19+ from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the EZ InLinkz linkup plugin until patched
wp plugin deactivate ez-inlinkz-linkup
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads
- Disable the EZ InLinkz linkup plugin completely
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for EZ InLinkz linkup version. If version is 0.18 or earlier, you are vulnerable.Check Version:
wp plugin get ez-inlinkz-linkup --field=versionVerify Fix Applied:
Verify plugin version is 0.19 or later in WordPress admin panel → Plugins → Installed Plugins.📡 Detection & Monitoring
Log Indicators:
- Unusual POST/GET requests containing script tags or JavaScript payloads to plugin endpoints
- Multiple failed login attempts following suspicious requests
Network Indicators:
- HTTP requests containing <script>, javascript:, or eval() patterns
- Outbound connections to suspicious domains following plugin page visits
SIEM Query:
source="wordpress.log" AND ("ez-inlinkz" OR "inlinkz") AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")