CVE-2025-4666
📋 TL;DR
The Zotpress WordPress plugin has a stored XSS vulnerability in the 'nickname' parameter that allows authenticated attackers with Author privileges or higher to inject malicious scripts. These scripts execute when users view compromised pages, potentially affecting all visitors to vulnerable WordPress sites.
💻 Affected Systems
- Zotpress 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, deface websites, or perform actions on behalf of authenticated users.
Likely Case
Attackers with Author access inject malicious scripts to steal admin credentials or perform limited site defacement.
If Mitigated
With proper input validation and output escaping, no script execution occurs, limiting impact to data integrity issues.
🎯 Exploit Status
Exploitation requires authenticated access with Author privileges or higher. The vulnerability is straightforward to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.3.16 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3207778%40zotpress%2Ftrunk&old=3199206%40zotpress%2Ftrunk
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Zotpress and click 'Update Now'. 4. Verify version is 7.3.16 or higher.
🔧 Temporary Workarounds
Remove vulnerable plugin
allTemporarily disable or remove Zotpress plugin until patched
wp plugin deactivate zotpress
wp plugin delete zotpress
Restrict user roles
linuxTemporarily remove Author and higher privileges from untrusted users
wp user list --role=author --field=ID | xargs wp user set-role subscriber
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads in nickname parameter
- Enable Content Security Policy (CSP) headers to restrict script execution sources
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Zotpress version 7.3.15 or earlierCheck Version:
wp plugin list --name=zotpress --field=versionVerify Fix Applied:
Verify Zotpress version is 7.3.16 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to admin-ajax.php with nickname parameter containing script tags
- Multiple failed login attempts followed by successful Author role login
Network Indicators:
- Outbound connections to suspicious domains from WordPress server after page views
SIEM Query:
source="wordpress.log" AND ("nickname" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload="))🔗 References
- https://plugins.trac.wordpress.org/browser/zotpress/trunk/lib/admin/admin.accounts.php#L86
- https://plugins.trac.wordpress.org/browser/zotpress/trunk/lib/admin/admin.functions.php#L66
- https://plugins.trac.wordpress.org/browser/zotpress/trunk/lib/admin/admin.options.form.php#L33
- https://plugins.trac.wordpress.org/browser/zotpress/trunk/lib/admin/admin.options.form.php#L35
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1058078b-3afa-4fe7-913a-b6fc32252bf6?source=cve
