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CRLFsuite

The most powerful CRLF injection (HTTP Response Splitting) scanner.

Install / Use

/learn @Raghavd3v/CRLFsuite

README

<a href="https://github.com/Nefcore/CRLFsuite"><p align="center"><img src="https://github.com/Nefcore/CRLFsuite/blob/main/static/CRLFsuite_logo2.0.png" height="150" width="150"></p></a>

<h2 align="center">CRLFsuite - CRLF injection scanner</h2>

made-with-python GitHub release PyPI license GitHub forks GitHub contributors

<img src="https://github.com/Nefcore/CRLFsuite/blob/main/static/crlfsuitev2.0.svg"> <hr>

The project is no more managed by developers.

CRLFsuite is a powerful tool for CRLF injection detection and exploitation. Want to know how it works. <a href="https://github.com/Nefcore/CRLFsuite/wiki/How-CRLFsuite-works%3F">Here's how</a>

Installation

You can install CRLFsuite using pip as given below:

pip3 install crlfsuite

or download this repository and run the following command:

sudo python3 setup.py install

Features

  • Single URL scanning

  • Multiple URL scanning

  • Stdin supported

  • WAF detection

  • Powerful payload generator

  • CRLF Injection to XSS Chaining feature

  • GET & POST method supported

  • Concurrency

  • Fast and efficient scanning with negligible false-positive

Newly added in v2.5.1:

  • Json & Text ouput supported

  • Multiple headers supported

  • Verbose output supported

  • Scan can be resumed after CTRL^C is pressed

  • Added heuristic (basic) scanner

  • Compatibility with windows

credits

  • <a href="https://github.com/Nefcore/CRLFsuite/blob/main/crlfsuite/core/prompt.py">prompt.py</a> is taken from <a href="https://github.com/s0md3v/Arjun/blob/master/arjun/core/prompt.py">Arjun</a>
  • WAF Detection methodology is taken from <a href="https://github.com/s0md3v/XSStrike/blob/master/core/wafDetector.py">XSStrike</a>
  • User-Agent list is taken from <a href="https://github.com/devanshbatham/ParamSpider/blob/master/core/requester.py">ParamSpider</a>
  • WAF signatures is taken from <a href="https://github.com/s0md3v/XSStrike/blob/master/db/wafSignatures.json">XSStrike</a> and <a href="https://github.com/EnableSecurity/wafw00f/tree/master/wafw00f/plugins">wafw00f</a>
View on GitHub
GitHub Stars594
CategoryDevelopment
Updated5d ago
Forks81

Languages

Python

Security Score

100/100

Audited on Mar 31, 2026

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