CVE-2026-30777
📋 TL;DR
EC-CUBE contains an MFA bypass vulnerability that allows attackers with valid administrator credentials to circumvent two-factor authentication and access administrative functions. This affects EC-CUBE e-commerce platform administrators who have MFA enabled. The vulnerability requires attackers to already possess valid administrator credentials.
💻 Affected Systems
- EC-CUBE
⚠️ 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 compromise of administrative functions leading to data theft, website defacement, or injection of malicious code into the e-commerce platform.
Likely Case
Unauthorized access to administrative dashboard allowing configuration changes, user data viewing, or order manipulation.
If Mitigated
Limited impact if strong credential hygiene is maintained and MFA bypass attempts are monitored.
🎯 Exploit Status
Exploitation requires valid administrator credentials. The specific bypass mechanism is not detailed in public sources.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to latest EC-CUBE version as specified in vendor advisory
Vendor Advisory: https://www.ec-cube.net/info/weakness/20260209/index.php
Restart Required: Yes
Instructions:
1. Backup current installation. 2. Download latest EC-CUBE version from official source. 3. Follow EC-CUBE update procedures. 4. Restart web server. 5. Verify MFA functionality.
🔧 Temporary Workarounds
Disable MFA temporarily
allTemporarily disable multi-factor authentication for administrative accounts until patching is complete.
Edit EC-CUBE configuration to disable MFA module
Restrict administrative access
allLimit administrative interface access to specific IP addresses or VPN-only connections.
Configure web server (Apache/Nginx) IP restrictions for admin paths
🧯 If You Can't Patch
- Implement network segmentation to isolate administrative interfaces
- Enforce strong password policies and credential rotation for all administrative accounts
🔍 How to Verify
Check if Vulnerable:
Check if MFA bypass is possible by attempting administrative login with known credentials but skipping MFA step.Check Version:
Check EC-CUBE version in administration panel or via composer show ec-cube/ec-cubeVerify Fix Applied:
After update, test that MFA properly enforces second factor before granting administrative access.📡 Detection & Monitoring
Log Indicators:
- Administrative login attempts without corresponding MFA verification logs
- Multiple failed MFA attempts followed by successful administrative access
Network Indicators:
- Unusual administrative access patterns or access from unexpected locations
SIEM Query:
source="ec-cube-logs" (event="admin_login" AND NOT event="mfa_verification")