CVE-2025-15285
📋 TL;DR
The SEO Flow by LupsOnline WordPress plugin has an authorization bypass vulnerability that allows unauthenticated attackers to create, modify, and delete blog posts and categories. This affects all WordPress sites using plugin versions up to 2.2.1. The vulnerability exists because API authentication functions lack proper WordPress capability checks.
💻 Affected Systems
- SEO Flow by LupsOnline WordPress plugin
⚠️ Risk & Real-World Impact
Worst Case
Complete website defacement, content deletion, or injection of malicious content/backdoors leading to full site compromise.
Likely Case
Unauthorized content modification, SEO spam injection, or defacement of blog posts and categories.
If Mitigated
No impact if plugin is patched or disabled; minimal impact if proper web application firewalls are blocking unauthorized API requests.
🎯 Exploit Status
Simple HTTP requests to vulnerable API endpoints can trigger the vulnerability without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.2 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/lupsonline-link-netwerk/tags/2.2.2/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'SEO Flow by LupsOnline'. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 2.2.2+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the SEO Flow plugin until patched
wp plugin deactivate lupsonline-link-netwerk
Web Application Firewall rule
allBlock requests to vulnerable API endpoints
Block HTTP requests to /wp-json/linknetwerk/* endpoints
🧯 If You Can't Patch
- Disable the SEO Flow plugin immediately
- Implement strict network access controls to block unauthorized API requests to /wp-json/linknetwerk/* endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'SEO Flow by LupsOnline' version 2.2.1 or earlierCheck Version:
wp plugin get lupsonline-link-netwerk --field=versionVerify Fix Applied:
Verify plugin version is 2.2.2 or later in WordPress admin plugins page📡 Detection & Monitoring
Log Indicators:
- Unusual POST/PUT requests to /wp-json/linknetwerk/* endpoints from unauthenticated users
- Unexpected blog post/category creation/modification events
Network Indicators:
- HTTP traffic to /wp-json/linknetwerk/v1/blog or /wp-json/linknetwerk/v1/category endpoints without authentication
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-json/linknetwerk/*" AND http_method IN ("POST", "PUT", "DELETE") AND user="-")