Pip install Wfuzz

To install WFuzz using pip

$ pip install wfuzz

Use the wfuzz docker image

You can pull wfuzz docker image from github registry by executing:

$ docker pull

Get the Source Code

Wfuzz is actively developed on GitHub.

You can either clone the public repository:

$ git clone git://

Or download last release.

Once you have a copy of the source, you can embed it in your own Python package, or install it into your site-packages easily:

$ python install


Wfuzz uses:

Installation issues

Pycurl on MacOS

Wfuzz uses pycurl as HTTP library. You might get errors like the listed below when running Wfuzz:

pycurl: libcurl link-time ssl backend (openssl) is different from compile-time ssl backend (none/other)


pycurl: libcurl link-time ssl backend (none/other) is different from compile-time ssl backend (openssl)

This is due to the fact that, MacOS might need some tweaks before pycurl is installed correctly:

  1. First you need to install OpenSSL via Homebrew:

    $ brew install openssl
  2. Curl is normally already installed in MacOs, but to be sure it uses OpenSSL, we need to install it using brew:

    $ brew install curl-openssl
  3. Curl is installed keg-only by brew. This means that is installed but not linked. Therefore, we need to instruct pip to use the recently installed curl before installing pycurl. We can do this permanently by changing our bash_profile:

    $ echo 'export PATH="/usr/local/opt/curl-openssl/bin:$PATH"' >> ~/.bash_profile
  4. Or temporary in the current shell:

    $ export PATH="/usr/local/opt/curl-openssl/bin:$PATH"
  5. Then, we need to install pycurl as follows:

    $ PYCURL_SSL_LIBRARY=openssl LDFLAGS="-L/usr/local/opt/openssl/lib" CPPFLAGS="-I/usr/local/opt/openssl/include" pip install --no-cache-dir pycurl
  6. Finally, if we re-install or execute wfuzz again it should work correctly.

If you get errors such as:

Fatal exception: dlopen(xxx/lib/python3.7/site-packages/, 2): Library not loaded:      /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
Referenced from: /usr/local/opt/curl-openssl/lib/libcurl.4.dylib
Reason: image not found. Wfuzz needs pycurl to run. Pycurl could be installed using the following command:

Run brew update && brew upgrade

If you get an error such as:

ImportError: pycurl: libcurl link-time ssl backends (secure-transport, openssl) do not include compile-time ssl backend (none/other)

That might indicate that pycurl was reinstalled and not linked to the SSL correctly. Uninstall pycurl as follows:

$ pip uninstall pycurl

and re-install pycurl starting from step 4 above.

Pycurl on Windows

Install pycurl matching your python version from

PyCurl SSL bug

If you experience errors when using Wfuzz against SSL sites, it could be because an old know issue:

Briefly, pycurl is built against libcurl3-gnutls, which does not work with a number of web sites. Pycurl fails with the following error message:

pycurl.error: (35, 'gnutls_handshake() failed: A TLS packet with unexpected length was received.')

Verifying the problem

  • Pycurl linked against gnutls:

    $ python
    >>> import pycurl
    >>> pycurl.version
    libcurl/7.21.3 GnuTLS/2.8.6 zlib/ libidn/1.18'
  • Pycurl linked against openssl:

    $ python
    >>> import pycurl
    >>> pycurl.version
    'libcurl/7.21.3 OpenSSL/0.9.8o zlib/ libidn/1.18'

Installing pycurl openssl flavour

In newer Ubuntu versions, you can install libcurl openssl flavour:

$ sudo apt install libcurl4-openssl-dev
$ sudo pip3 install --upgrade wfuzz

Installing pycurl against openssl

Alternatively, it can be done manually:

  1. sudo apt-get install build-essential fakeroot dpkg-dev
  2. mkdir ~/python-pycurl-openssl
  3. cd ~/python-pycurl-openssl
  4. sudo apt-get source python-pycurl
  5. sudo apt-get build-dep python-pycurl -y

6. sudo apt-get install libcurl4-openssl-dev -y * CAUTION: BE CAREFUL WITH THIS OR DELETE THE DIRECTORY MANUALLY TO BE SAFE * 7. sudo rm -r .// ; dpkg-source -x pycurl_7.dsc # * CAUTION: BE CAREFUL WITH THIS OR DELETE THE DIRECTORY MANUALLY TO BE SAFE * 8. cd pycurl*/ 9. edit debian/control file and replace all instances of “libcurl4-gnutls-dev” with “libcurl4-openssl-dev”: sed -i ‘s/libcurl4-gnutls-dev/libcurl4-openssl-dev/g’ debian/control sed -i ‘s/rm -f/rm -rf/g’ debian/rules # fix debian/rules ‘rm -r’ typo preventing existing directory delete 10. sudo PYCURL_SSL_LIBRARY=openssl; dpkg-buildpackage -rfakeroot -b -uc -us 11. sudo dpkg -i ../python-pycurl_7*.deb

If there is still the error:

ImportError?: No module named bottle

Check this