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.
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 Concern
No 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 waves 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.
Roblox’s Responsibility for Email-Based 2FA Vulnerability
Roblox offers email-based 2FA as a valid option for securing accounts, implicitly endorsing it as a secure method. However, email-based 2FA is inherently flawed, and many users—especially those who are less tech-savvy—will assume all available 2FA options are equally secure. If one of those methods is vulnerable, Roblox itself bears responsibility for the resulting security breach.
The Issue:
Insecure 2FA Configuration: Many users, especially younger or non-technical individuals, rely on the platform to make security decisions for them. By allowing email-based 2FA, which is vulnerable, Roblox fails to adequately protect its users.
Lack of Awareness: Most users do not realize that email, already used for account recovery, is a poor choice for 2FA. Many are unaware they’re creating a single point of failure, and Roblox does not sufficiently warn them about the risks of email-based 2FA. As a result, users are left vulnerable by default.
Impact on Vulnerable Users:
Children and Teens: Roblox has a large user base of children and teens who are particularly vulnerable to this flaw. Many of these users rely on their parents’ email accounts, which may be poorly secured, shared, or reused across platforms.
Exploitable Vulnerability: The fact that email-based 2FA is an option creates a predictable and easily exploitable vulnerability. Attackers only need to target email accounts, which are commonly compromised through phishing or data breaches. This increases the potential for large-scale attacks on Roblox accounts.
Broader Implications:
Massive Attack Surface: If every account using email-based 2FA is vulnerable, it significantly expands the attack surface for malicious actors. Even users who switch to stronger 2FA methods leave the broader user base exposed.
Platform Responsibility: While individual users can take steps to secure their accounts by switching to an authenticator app, Roblox must ensure that insecure 2FA configurations are not allowed in the first place. This is not just a user choice issue but a platform-level design flaw that needs to be addressed.
Conclusion:
The current design of email-based 2FA exposes Roblox’s most vulnerable users to increased risk. Roblox has a broader responsibility to protect its user base by default, ensuring that weak security options like email-based 2FA are not allowed. This is a systemic issue that requires immediate attention at the platform level.
I didn’t use AI to write the post; I used it to format it.
In this situation, it’s far more important to convey the information clearly rather than through a text wall with poor grammar to ensure it reaches the widest possible audience.
It’s baffling to me that the focus of the post is on how it’s written, rather than on the significant security flaw it addresses. This highlights how the priorities of the Roblox community are severely misplaced.
It’s hard to understand why anyone would care about the way the post is written when millions of accounts are at risk.
Its true the feature technically “works as inteded” but it makes 2Auth with email less secure than without 2Auth.
They only need your email to log in your account which is a lot more vulnerable than your roblox username and password. Emails are used everywhere like signing in to that one random website. All it takes is a single weakness in their infastructure and bam your email as been leaked.
With your email, they can log into your account without ur password or username. The feature is meant to be secured with 2Auth, but if you set your 2Auth to your email it just sends another code to the same email and you are compromised with email alone.
While I agree that email based 2FA is inferior and a single point of failure is far from ideal, I’m not sure what you’re suggesting here? Roblox already signals in the security settings that email is less secure than a hardware key or authenticator app and it supports passkeys as a more secure way of conveniently logging in. Are you suggesting that Roblox make the warnings more clear or that it get rid of the One-Time Code login method?
You’re definitely correct that Roblox gives warnings about the risks of email-based 2FA, but the real problem comes with how the One-Time Code feature works.
Emails are extremely vulnerable and are often compromised. When the login code and the 2FA code are both sent to the same email address, it leaves the account exposed, even though 2FA is enabled.
Basically, accounts with email-based 2FA are actually weaker than accounts without any extra verification at all. Emails are much easier to hack, mainly because they’re used everywhere and targeted constantly. If a hacker gets into your email, they’ve basically got your account—no need for a password or username.
Yes: keeping your passwords safe and using different ones for each site is key. I agree that changing them regularly is also a smart move.
That said, the issue with email-based 2FA shows that it’s not over yet. Even with strong passwords, this vulnerability still leaves accounts exposed. If a hacker gains access to your email, they can bypass both your password and 2FA. Roblox needs to fix this because email security just isn’t enough.
To anyone concerned about their account security, I recommend checking out these resources, including one from Roblox itself. But we also need to keep pushing for Roblox to adress this security flaw!
its important because If your email gets compromised, a hacker can instantly access your Roblox account and other personal information. Its good to use strong passwords.
But even with a strong email password, there is still the issue with email-based 2FA remains. If Roblox doesn’t address this vulnerability, just securing your email isn’t enough. So while it’s important to keep your email password strong, Roblox still needs to improve their 2FA system to prevent this kind of attack.
You’re mocking the formatting of the post but I doubt you understand what its about. I am sure that it was difficult to get chatgpt to critique the post since its such a significant issue.
You likely had to specify that it was “to improve it” acting as if you wrote the post and/or send multiple requests
Agreed but compromising an email is hardly a simple affair, it requires knowing both the email AND the password of the email (not even mentioning that some emails use MFA as well). At any rate if somebody’s email is compromised then there’s not much Roblox can do to stop a determined attacker since they can then contact Roblox support to ask for help bypassing 2FA while impersonating the account owner
I don’t follow the logic here. Without 2FA, either the password being revealed OR the email being compromised will lead to the Roblox account being compromised. With 2FA (even email 2FA), knowing somebody’s password does not instantly grant you access to their account. It still reduces the number of methods bad actors can use to get into somebody’s account.
TLDR: If you use Email 2FA, your account is at severe risk right now! 
