# Rate Limit Bypass / 2FA / OTP Bypass

* <https://medium.com/@huzaifa_tahir/methods-to-bypass-rate-limit-5185e6c67ecd>

{% embed url="<https://twitter.com/harrmahar/status/1247306384128872448>" %}

{% embed url="<https://twitter.com/udit_thakkur/status/1241832273898430464>" %}

* Wanna Bypass Rate Limit ? Try Bypass with adding null payload %00, %0d%0a, %09, %0C, %20, %0 on email. Not Works ? Just try adding "blank space" on the email, works!
* <https://shahmeeramir.com/4-methods-to-bypass-two-factor-authentication-2b0075d9eb5f>

```
X-Originating-IP: IP
X-Forwarded-For: IP
X-Remote-IP: IP
X-Remote-Addr: IP
X-Client-IP: IP
X-Host: IP
X-Forwared-Host: IP
True-Client-IP: IP
X-Real-IP: IP
```

I just happened to be able to bypass a 2FA in place during a recent engagement. And this was how I did it. [#bugbountyTips](https://twitter.com/hashtag/bugbountyTips?src=hashtag_click) [#pentestTips](https://twitter.com/hashtag/pentestTips?src=hashtag_click) Last /setup/ endpoint was by attacker while the first one is as victim.[![Image](https://pbs.twimg.com/media/EWHB2DOUMAAfudW?format=png\&name=medium)](https://twitter.com/imhaxormad/status/1252495614161506309/photo/1)

![](https://3284959579-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LmdDaax1PAvLD05wJYt%2F-MFnpthbu_XU6rCBzm_e%2F-MFoFgskwIajJ3zBU0N2%2Fimage.png?alt=media\&token=a6f3972e-1912-435e-ac4f-5b0c95d6bc9b)

![](https://3284959579-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LmdDaax1PAvLD05wJYt%2F-MTFqRp-yPp8njZocDEN%2F-MTFx8sSGKlcFTuYwZWq%2Fimage.png?alt=media\&token=ca685644-55b2-44e9-b6b4-2f71b5ee41cb)

![](https://3284959579-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LmdDaax1PAvLD05wJYt%2F-MTG0p8wfy7Od-0RQ9Gr%2F-MTG12T92LzRkjHXS98h%2Fimage.png?alt=media\&token=05d05260-c33e-4e42-95bf-68d156f4798c)

![](https://3284959579-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LmdDaax1PAvLD05wJYt%2F-MWEKOIX73MDy6bxkMB1%2F-MWEKRH0xkzO1FhzCDdH%2Fimage.png?alt=media\&token=556bdc88-f609-4eed-9049-9796053c4f64)

![](https://3284959579-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LmdDaax1PAvLD05wJYt%2F-MWEKtK3XDIKFoKmsd0n%2F-MWEL0XZK12wfReAGrOD%2Fimage.png?alt=media\&token=a0d5b3f5-3f62-4b67-bfa3-fe725df9684e)

{% embed url="<https://twitter.com/harshbothra_/status/1345044218276839424?s=20>" %}

[How to find authentication bypass vulnerabilities. Focus. I Added headers. Request GET /delete?user=test HTTP/1.1 Response HTTP/1.1 401 Unauthorized Reqeust GET /delete?user=test HTTP/1.1 X-Custom-IP-Authorization: 127.0.0.1 Response HTTP/1.1 302 Found #bugbounty #bugbountytips](https://twitter.com/M404ntf/status/1347919441296809984?s=20)

* <https://blog.cobalt.io/bypassing-the-protections-mfa-bypass-techniques-for-the-win-8ef6215de6ab>
* <https://notifybugme.medium.com/unauthorized-access-to-admin-setpassword-page-by-bypass-403-forbidden-f10bbb92ab35>

{% embed url="<https://twitter.com/santosomar/status/1433191775041118208?s=20>" %}

[everytime yu face a 401 Unauthorized respense add this header to the request : X-Custom-IP-Authorization: 127.0.0.1 #bugbountytips](https://twitter.com/K0to4m4tsukami/status/1365058637887078406?s=20) / X-Forwarded-Origin: 127.0.0.1

Bug Bounty Technique:

GET /page.php?path=../../etc/passwd

Forbidden 403 ?

Try One Of These:

(1)../../../etc/passwd%00

(2)....//....//....//etc/passwd

(3)%252e%252e%252fetc%252fpasswd

{% embed url="<https://twitter.com/FaniMalikHack/status/1395042756108505092?s=20>" %}

2FA - <https://mazoka777.medium.com/two-factor-authentication-bypass-4c814627f8c3>

{% embed url="<https://github.com/aufzayed/bugbounty/tree/main/403-bypass>" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://gowthams.gitbook.io/bughunter-handbook/list-of-vulnerabilities-bugs/rate-limit-bypass.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.