CVE-2024-56294
📋 TL;DR
A missing authorization vulnerability in POSIMYTH Nexter Blocks WordPress plugin allows attackers to exploit incorrectly configured access control security levels. This enables unauthorized users to perform actions intended for privileged users. All WordPress sites using Nexter Blocks versions up to 4.0.7 are affected.
💻 Affected Systems
- POSIMYTH Nexter Blocks (The Plus Addons for Block Editor)
⚠️ 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 plugin settings, inject malicious content, or potentially escalate privileges to gain administrative control of the WordPress site.
Likely Case
Unauthorized users could modify frontend content, change plugin configurations, or access restricted functionality without proper authentication.
If Mitigated
With proper access controls and authentication checks, the vulnerability would be prevented, limiting impact to authorized operations only.
🎯 Exploit Status
Missing authorization vulnerabilities typically require minimal technical skill to exploit once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.8 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Nexter Blocks' or 'The Plus Addons for Block Editor'. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 4.0.8+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Nexter Blocks plugin until patched
Restrict plugin access
allUse WordPress user role management to restrict who can access plugin functionality
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block unauthorized access to plugin endpoints
- Enable WordPress security plugins that monitor and block suspicious user behavior
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Nexter Blocks version. If version is 4.0.7 or lower, you are vulnerable.Check Version:
wp plugin list --name='nexter-blocks' --field=version (if WP-CLI installed)Verify Fix Applied:
After updating, verify plugin version shows 4.0.8 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to plugin-specific endpoints in WordPress logs
- Unexpected user role changes or permission modifications
Network Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with plugin-specific actions
- Requests to plugin endpoints from unauthenticated users
SIEM Query:
source="wordpress.log" AND ("nexter-blocks" OR "the-plus-addons") AND ("unauthorized" OR "permission denied" OR "admin-ajax.php")