CVE-2026-25016
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in the Nelio Popups WordPress plugin that allows attackers to exploit incorrectly configured access control security levels. It affects all versions up to and including 1.3.5, potentially allowing unauthorized users to access functionality intended only for administrators.
💻 Affected Systems
- Nelio Popups 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 modify popup settings, inject malicious content, or potentially escalate privileges to gain administrative control of the WordPress site.
Likely Case
Unauthorized users could modify popup configurations, change content, or disable security features, leading to defacement or content manipulation.
If Mitigated
With proper access controls and authentication checks, only authorized administrators can access plugin functionality.
🎯 Exploit Status
Exploitation requires access to WordPress but not necessarily administrative privileges. The vulnerability is in access control mechanisms.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 1.3.5
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Nelio Popups and click 'Update Now'. 4. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patching is possible
wp plugin deactivate nelio-popups
Restrict Access via .htaccess
linuxAdd access restrictions to plugin directories
# Add to .htaccess in wp-content/plugins/nelio-popups/
Order Deny,Allow
Deny from all
Allow from 127.0.0.1
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access WordPress admin interface
- Enable WordPress security plugins that monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Nelio Popups version numberCheck Version:
wp plugin get nelio-popups --field=versionVerify Fix Applied:
Verify plugin version is greater than 1.3.5 and test access controls📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to /wp-admin/admin.php?page=nelio-popups
- Unexpected modifications to popup settings
Network Indicators:
- HTTP requests to plugin admin endpoints from non-admin IPs
SIEM Query:
source="wordpress.log" AND ("nelio-popups" OR "admin.php?page=nelio-popups") AND NOT user_role="administrator"