CVE-2025-67507
📋 TL;DR
This vulnerability allows attackers to bypass multi-factor authentication (MFA) in Filament applications by reusing the same recovery code indefinitely. It affects Laravel applications using Filament's app-based MFA with recovery codes enabled. Only users with app-based MFA (not email-based) are vulnerable.
💻 Affected Systems
- Filament (Laravel development framework)
📦 What is this software?
Filament by Filamentphp
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover of any user with app-based MFA enabled, allowing attackers to bypass all authentication controls and access sensitive data or perform privileged actions.
Likely Case
Targeted account compromise where attackers obtain a valid recovery code through phishing or other means, then reuse it to bypass MFA and gain unauthorized access.
If Mitigated
Limited impact with proper monitoring and alerting on MFA bypass attempts, combined with strong password policies and session management.
🎯 Exploit Status
Exploitation requires obtaining a valid recovery code through legitimate use or other means, then reusing it. The actual bypass mechanism is straightforward once a code is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.3.1
Vendor Advisory: https://github.com/filamentphp/filament/security/advisories/GHSA-pvcv-q3q7-266g
Restart Required: No
Instructions:
1. Update Filament to version 4.3.1 or later using composer: 'composer require filament/filament:^4.3.1'. 2. Run 'composer update'. 3. Clear Laravel cache: 'php artisan cache:clear'. 4. Test MFA functionality.
🔧 Temporary Workarounds
Disable Recovery Codes
allTemporarily disable recovery codes for app-based MFA until patching is complete
Modify Filament configuration to set 'recovery_codes.enabled' to false for app-based MFA
Switch to Email MFA
allTemporarily use email-based MFA instead of app-based MFA
Update user MFA configuration to use email-based authentication instead of app-based
🧯 If You Can't Patch
- Disable app-based MFA recovery codes in all configurations
- Implement additional monitoring for MFA bypass attempts and review all MFA-related logs daily
🔍 How to Verify
Check if Vulnerable:
Check Filament version in composer.json or via 'composer show filament/filament'. If version is between 4.0.0 and 4.3.0 inclusive, and app-based MFA with recovery codes is enabled, the system is vulnerable.Check Version:
composer show filament/filament | grep versionsVerify Fix Applied:
1. Confirm Filament version is 4.3.1 or higher. 2. Test that recovery codes are properly invalidated after use by attempting to reuse a previously used code (should fail).📡 Detection & Monitoring
Log Indicators:
- Multiple successful MFA attempts using the same recovery code
- MFA bypass attempts from unusual locations or IPs
- Rapid succession of MFA recovery code usage
Network Indicators:
- Unusual authentication patterns from single IP addresses
- Multiple account access attempts using MFA recovery
SIEM Query:
source="auth.log" AND ("recovery code" OR "MFA bypass") AND status="success" | stats count by user, src_ip, recovery_code | where count > 1