CVE-2025-6718
📋 TL;DR
The B1.lt WordPress plugin has an SQL injection vulnerability that allows authenticated attackers with Subscriber-level access or higher to execute arbitrary SQL commands. This affects all WordPress sites using B1.lt plugin versions up to 2.2.56. Attackers could potentially read, modify, or delete database content.
💻 Affected Systems
- B1.lt 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
Complete database compromise leading to data theft, privilege escalation, site takeover, or ransomware deployment.
Likely Case
Data exfiltration of sensitive information (user credentials, personal data, payment info) and potential privilege escalation to administrator.
If Mitigated
Limited impact if proper network segmentation, database permissions, and monitoring are in place.
🎯 Exploit Status
Exploitation requires authenticated access but only at Subscriber level, which is trivial to obtain on many WordPress sites.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.57 or later
Vendor Advisory: https://wordpress.org/plugins/b1-accounting/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find B1.lt plugin and click 'Update Now'. 4. Verify version is 2.2.57 or higher.
🔧 Temporary Workarounds
Disable vulnerable AJAX endpoint
allRemove the vulnerable b1_run_query AJAX action handler
Add to theme's functions.php or custom plugin: remove_action('wp_ajax_b1_run_query', 'b1_run_query_callback'); remove_action('wp_ajax_nopriv_b1_run_query', 'b1_run_query_callback');
Temporarily disable plugin
linuxDeactivate B1.lt plugin until patched
wp plugin deactivate b1-accounting
🧯 If You Can't Patch
- Implement strict network access controls to limit WordPress admin access to trusted IPs only.
- Enable WordPress security plugins with SQL injection detection and implement database user privilege separation.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for B1.lt plugin version 2.2.56 or lower.Check Version:
wp plugin get b1-accounting --field=versionVerify Fix Applied:
Confirm B1.lt plugin version is 2.2.57 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual database queries in WordPress or MySQL logs
- Multiple failed login attempts followed by successful Subscriber login
- AJAX requests to /wp-admin/admin-ajax.php with action=b1_run_query
Network Indicators:
- POST requests to /wp-admin/admin-ajax.php containing SQL syntax in parameters
- Unusual database connection patterns from WordPress server
SIEM Query:
source="wordpress.log" AND "action=b1_run_query" OR source="mysql.log" AND "SELECT|INSERT|UPDATE|DELETE|UNION" FROM WordPress IP