CVE-2025-53570
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the DELUCKS SEO WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all WordPress sites running DELUCKS SEO versions up to 2.7.0, potentially compromising user sessions and site security.
💻 Affected Systems
- DELUCKS SEO 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 credentials, take over the WordPress site, deface content, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, perform actions on behalf of authenticated users, or display phishing content to visitors.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution while maintaining functionality.
🎯 Exploit Status
Exploitation requires the ability to inject malicious payloads into the plugin's input fields, which typically requires some level of access or user interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.7.0
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find DELUCKS SEO and click 'Update Now' if available. 4. If no update appears, manually download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable DELUCKS SEO Plugin
WordPressTemporarily disable the vulnerable plugin until patched
wp plugin deactivate delucks-seo
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 wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Disable the DELUCKS SEO plugin immediately
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → DELUCKS SEO version. If version is 2.7.0 or lower, you are vulnerable.Check Version:
wp plugin list --name=delucks-seo --field=versionVerify Fix Applied:
After update, verify DELUCKS SEO version is higher than 2.7.0 in WordPress admin plugins page.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- JavaScript payloads in input fields
- Multiple failed XSS attempts in web server logs
Network Indicators:
- Suspicious script tags in HTTP requests
- Unusual outbound connections after page loads
SIEM Query:
source="web_server" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=") AND uri="*delucks*"