TLDR: If you use Email 2FA, your account is at severe risk right now!
Hackers only need your email to fully log into your account.
Emails are incredibly insecure and already targeted on mass by attackers.
They don’t even need your password or username to gain access.
This vulnerability exposes your Roblox account to significant risk if you’re using email-based two-factor authentication (2FA). It’s critical to secure your email and consider other forms of authentication to protect your account.
Hackers can take advantage of this flaw by using bots to iterate through a list of leaked email addresses, checking each one for associated Roblox accounts. Once they find an email linked to an account, they can instantly bypass 2FA by using the “One-Time Code” feature — no username or password needed. This allows them to quickly and easily hijack accounts without any extra barriers, making mass attacks far more effective and dangerous.
If your email has been linked in even a single company’s data breach, which are very common for emails as they are used everywhere, your account might be instantly compromised!
Bypassing Two-Factor Authentication (2FA): “One Time Code” poses a significant risk!This feature, intended to simplify the login process for users (e.g., if they forget their password), inadvertently bypasses the first step of 2FA. Here’s how it works:
On the Roblox Login screen, users can request a One-Time Code by entering an email address.
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This code, sent to the provided email, allows immediate access without requiring the account’s username or password.
Once the code is entered, 2FA prompts another code, which is also sent to the same email.
This mechanism effectively reduces account security to the strength of the user’s email account, exposing all Roblox accounts using 2Auth with email to potential compromise.
Step-by-Step Exploitation Process A hacker enters any email address on the Roblox Login screen. Roblox sends a One-Time Code to the provided email. The hacker uses the code to log in, triggering the 2FA step. 2FA sends another code to the same email address, completing the login process. Key Points of ConcernNo Username or Password Required:
An attacker only needs the victim’s email to initiate the login process.Email Insecurity:
Emails are commonly compromised due to data breaches, phishing attacks, or weak passwords. If a hacker gains access to a victim’s email, they can: Request a One-Time Code. Use the code to bypass 2FA and log in to the victim’s Roblox account.Massive wes of attacks
The fact that email-based 2FA is a valid option creates a predictable and exploitable vulnerability Attackers only need to target email accounts—something they are already doing at scale—to compromise a large number of Roblox accounts. If every account with email-based 2FA is inherently vulnerable, this creates a massive attack surface.Children/Teens are most vulnerable:
Roblox has a large user base of children and teens who are especially vulnerable. Many rely on their parents’ email accounts, which might be shared, poorly secured, or reused across platforms. By offering email-based 2FA, Roblox effectively exposes its most vulnerable users to increased risk.Systemic Risk:
This vulnerability exposes every Roblox account with Email based 2Auth to potential compromise, as email is the sole point of defense in this process. Summary of the Flaw The “Email Me One-Time Code” feature bypasses both username and password requirements, relying solely on email security. Emails are often vulnerable to compromise, making this feature a significant threat to account security.To mitigate this risk, Roblox must address this vulnerability immediately.