CVE-2025-5396
📋 TL;DR
The Bears Backup plugin for WordPress has a critical Remote Code Execution vulnerability that allows unauthenticated attackers to execute arbitrary code on the server. This affects all versions up to 2.0.0, and can be chained with CVE-2025-5394 on Alone theme versions 7.8.4 and older to install the vulnerable plugin.
💻 Affected Systems
- Bears Backup WordPress Plugin
- Alone WordPress Theme
⚠️ 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
Complete server compromise including backdoor installation, administrative account creation, data theft, and lateral movement within the network.
Likely Case
Attackers install backdoors, create admin accounts, deface websites, or deploy cryptocurrency miners on vulnerable WordPress sites.
If Mitigated
Limited impact with proper network segmentation, WAF rules, and minimal plugin permissions.
🎯 Exploit Status
Exploitation is trivial with publicly available proof-of-concept code. The vulnerability requires no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Bears Backup: >2.0.0, Alone Theme: >7.8.4
Vendor Advisory: https://www.wordfence.com/threat-intel/vulnerabilities/id/81b44abb-6d30-4930-b68b-9a04d93f5169
Restart Required: No
Instructions:
1. Update Bears Backup plugin to latest version. 2. Update Alone theme to latest version if using it. 3. Verify updates are applied correctly.
🔧 Temporary Workarounds
Disable Bears Backup Plugin
linuxTemporarily disable or remove the vulnerable plugin until patched.
wp plugin deactivate bears-backup
rm -rf wp-content/plugins/bears-backup/
Web Application Firewall Rules
allBlock requests to the vulnerable AJAX endpoint.
# Add WAF rule to block requests to /wp-admin/admin-ajax.php with action=bbackup_ajax_handle
🧯 If You Can't Patch
- Remove Bears Backup plugin completely from all WordPress installations
- Implement strict network access controls to limit exposure of WordPress admin interfaces
🔍 How to Verify
Check if Vulnerable:
Check WordPress plugin list for Bears Backup version ≤2.0.0 or Alone theme version ≤7.8.4Check Version:
wp plugin list --name=bears-backup --field=version && wp theme list --name=alone --field=versionVerify Fix Applied:
Confirm Bears Backup version >2.0.0 and Alone theme version >7.8.4 are installed📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=bbackup_ajax_handle
- Unusual PHP process execution from WordPress directories
- New admin user creation in WordPress logs
Network Indicators:
- Outbound connections to suspicious IPs from WordPress server
- Unusual traffic patterns to WordPress admin interfaces
SIEM Query:
source="wordpress.log" AND ("bbackup_ajax_handle" OR "call_user_func" OR "admin user created")