Executive Summary

CVE-2026-30777 is a vulnerability in EC-CUBE, an e-commerce platform, that allows an attacker to bypass multi-factor authentication (MFA). Specifically, if an attacker obtains a valid administrator ID and password, they can circumvent the two-factor authentication mechanism and gain unauthorized access to the administrative page.

The issue arises because the system does not properly enforce 2FA checks on certain routes, allowing an attacker with valid credentials to bypass the second authentication factor.

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Impact Analysis

If exploited, this vulnerability allows an attacker who has obtained valid administrator credentials to bypass the multi-factor authentication and gain unauthorized access to the administrative panel of EC-CUBE.

This unauthorized access could lead to administrative control over the e-commerce platform, potentially allowing the attacker to manipulate settings, access sensitive data, or disrupt operations.

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Compliance Impact

I don't know

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Detection Guidance

I don't know

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Mitigation Strategies

To mitigate the MFA bypass vulnerability in EC-CUBE, you should apply the provided patch files corresponding to your EC-CUBE version. The patches update key files to properly enforce two-factor authentication checks and prevent bypass.

• Backup all EC-CUBE files before applying patches.
• Apply the patch matching your EC-CUBE version: 4.1.2-p5, 4.2.3-p2, or 4.3.1-p1.
• Clear the cache via the admin panel after patching.
• Verify normal operation of both front-end and admin interfaces.
• Use maintenance mode during patching to avoid service disruption.

If you are using older versions or have customized EC-CUBE files, manually apply the provided code differences to enforce proper 2FA checks and prevent bypass.

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