CVE-2025-2009
📋 TL;DR
The Newsletters plugin for WordPress has a stored XSS vulnerability in its logging functionality that allows unauthenticated attackers to inject malicious scripts. These scripts execute automatically when users view compromised pages, potentially affecting all WordPress sites using vulnerable plugin versions.
💻 Affected Systems
- Newsletters plugin for WordPress
⚠️ 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 web application firewalls and content security policies, script execution would be blocked, limiting impact to script injection without execution.
🎯 Exploit Status
The vulnerability requires attackers to find and exploit the specific logging endpoint, but no authentication is required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 4.9.9.7
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3257980/newsletters-lite/trunk/views/admin/settings/view_logs.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Newsletters' plugin. 4. Click 'Update Now' if available. 5. If no update appears, manually download latest version from WordPress plugin repository and replace files.
🔧 Temporary Workarounds
Disable Newsletters Plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate newsletters
Implement Content Security Policy
allAdd CSP headers to prevent script execution from untrusted 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 a web application firewall (WAF) with XSS protection rules
- Restrict access to WordPress admin interface using IP whitelisting
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Newsletters plugin version 4.9.9.7 or earlierCheck Version:
wp plugin get newsletters --field=versionVerify Fix Applied:
Verify Newsletters plugin version is higher than 4.9.9.7 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin.php?page=newsletters-logs
- JavaScript payloads in URL parameters or POST data
- Multiple failed attempts to access logging functionality
Network Indicators:
- HTTP requests containing script tags or JavaScript code in parameters
- Unusual traffic patterns to WordPress admin endpoints from unauthenticated users
SIEM Query:
source="web_logs" AND (uri_path="/wp-admin/admin.php" AND uri_query="*page=newsletters-logs*" AND (http_method="POST" OR http_method="GET")) AND (message="*<script*" OR message="*javascript:*" OR message="*onload=*" OR message="*onerror=*")🔗 References
- https://plugins.trac.wordpress.org/browser/newsletters-lite/trunk/views/admin/settings/view_logs.php?rev=3212300#L107
- https://plugins.trac.wordpress.org/changeset/3257980/newsletters-lite/trunk/views/admin/settings/view_logs.php
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3825c80c-e4b1-4dd8-be77-38f718920b9a?source=cve
