CVE-2025-8624
📋 TL;DR
The Nexa Blocks WordPress plugin has a stored XSS vulnerability in its Google Maps widget that allows authenticated attackers with contributor-level access or higher to inject malicious scripts. These scripts execute whenever users view compromised pages, potentially affecting all visitors to vulnerable WordPress sites.
💻 Affected Systems
- Nexa Blocks 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, potentially leading to complete site compromise.
Likely Case
Attackers with contributor access inject malicious scripts that steal user session data or redirect visitors to phishing sites, compromising user accounts and site integrity.
If Mitigated
With proper user role management and input validation, impact is limited to low-privilege account compromise and minor site defacement.
🎯 Exploit Status
Requires authenticated attacker with contributor-level access or higher. Exploitation involves injecting scripts via Google Maps widget attributes.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.1.0
Vendor Advisory: https://wordpress.org/plugins/nexa-blocks/#developers
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Nexa Blocks plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin until patch is released.
🔧 Temporary Workarounds
Remove Contributor Access
allTemporarily remove contributor-level user accounts or restrict their permissions
Disable Google Maps Widget
allDisable or remove the vulnerable Google Maps widget from all pages
🧯 If You Can't Patch
- Deactivate and remove the Nexa Blocks plugin completely
- Implement web application firewall rules to block XSS payloads in Google Maps widget parameters
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Nexa Blocks version. If version is 1.1.0 or lower, you are vulnerable.Check Version:
wp plugin list --name=nexa-blocks --field=versionVerify Fix Applied:
After updating, verify plugin version is higher than 1.1.0. Test Google Maps widget with script payloads to confirm sanitization.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Google Maps widget endpoints
- Script tags in Google Maps widget parameters
- Multiple failed login attempts followed by contributor account activity
Network Indicators:
- Outbound connections to suspicious domains from WordPress pages containing Google Maps widgets
- Unusual traffic patterns to pages with Google Maps widgets
SIEM Query:
source="wordpress.log" AND ("nexa-blocks" OR "google-maps-widget") AND ("script" OR "onerror" OR "javascript:")