CVE-2025-39508
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Nasa Core WordPress plugin, which are then executed in victims' browsers. It affects all WordPress sites using Nasa Core plugin versions up to 6.3.2. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- Nasa Core 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 steal administrator session cookies, gain full control of WordPress site, install backdoors, deface website, or steal sensitive user data.
Likely Case
Attackers steal user session cookies, redirect visitors to malicious sites, or perform limited actions within user context.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers.
🎯 Exploit Status
Exploitation requires crafting malicious URLs containing XSS payloads and tricking users into clicking them.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.3.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Nasa Core plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Input Validation Web Application Firewall Rule
allConfigure WAF to block requests containing common XSS payload patterns targeting Nasa Core endpoints
WAF-specific configuration required
Disable Plugin Temporarily
linuxDeactivate Nasa Core plugin until patched if functionality is not critical
wp plugin deactivate nasa-core
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution sources
- Use browser security features like HttpOnly and Secure flags for session cookies
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Nasa Core version. If version is 6.3.2 or lower, system is vulnerable.Check Version:
wp plugin get nasa-core --field=versionVerify Fix Applied:
After update, verify Nasa Core version shows 6.3.3 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript payloads to Nasa Core endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*nasa-core*" AND (content="*<script>*" OR content="*javascript:*" OR content="*onerror=*"))