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ffuf is a fast web fuzzer written in Go that allows typical directory discovery, virtual host discovery (without DNS records) and GET and POST parameter fuzzing.

This program is useful for pentesters, ethical hackers and forensics experts. It also can be used for security tests.

Installed size: 7.82 MB
How to install: sudo apt install ffuf

  • libc6

Fast web fuzzer written in Go

root@kali:~# ffuf -h
Fuzz Faster U Fool - v2.1.0-dev

  -H                  Header `"Name: Value"`, separated by colon. Multiple -H flags are accepted.
  -X                  HTTP method to use
  -b                  Cookie data `"NAME1=VALUE1; NAME2=VALUE2"` for copy as curl functionality.
  -cc                 Client cert for authentication. Client key needs to be defined as well for this to work
  -ck                 Client key for authentication. Client certificate needs to be defined as well for this to work
  -d                  POST data
  -http2              Use HTTP2 protocol (default: false)
  -ignore-body        Do not fetch the response content. (default: false)
  -r                  Follow redirects (default: false)
  -raw                Do not encode URI (default: false)
  -recursion          Scan recursively. Only FUZZ keyword is supported, and URL (-u) has to end in it. (default: false)
  -recursion-depth    Maximum recursion depth. (default: 0)
  -recursion-strategy Recursion strategy: "default" for a redirect based, and "greedy" to recurse on all matches (default: default)
  -replay-proxy       Replay matched requests using this proxy.
  -sni                Target TLS SNI, does not support FUZZ keyword
  -timeout            HTTP request timeout in seconds. (default: 10)
  -u                  Target URL
  -x                  Proxy URL (SOCKS5 or HTTP). For example: or socks5://

  -V                  Show version information. (default: false)
  -ac                 Automatically calibrate filtering options (default: false)
  -acc                Custom auto-calibration string. Can be used multiple times. Implies -ac
  -ach                Per host autocalibration (default: false)
  -ack                Autocalibration keyword (default: FUZZ)
  -acs                Custom auto-calibration strategies. Can be used multiple times. Implies -ac
  -c                  Colorize output. (default: false)
  -config             Load configuration from a file
  -json               JSON output, printing newline-delimited JSON records (default: false)
  -maxtime            Maximum running time in seconds for entire process. (default: 0)
  -maxtime-job        Maximum running time in seconds per job. (default: 0)
  -noninteractive     Disable the interactive console functionality (default: false)
  -p                  Seconds of `delay` between requests, or a range of random delay. For example "0.1" or "0.1-2.0"
  -rate               Rate of requests per second (default: 0)
  -s                  Do not print additional information (silent mode) (default: false)
  -sa                 Stop on all error cases. Implies -sf and -se. (default: false)
  -scraperfile        Custom scraper file path
  -scrapers           Active scraper groups (default: all)
  -se                 Stop on spurious errors (default: false)
  -search             Search for a FFUFHASH payload from ffuf history
  -sf                 Stop when > 95% of responses return 403 Forbidden (default: false)
  -t                  Number of concurrent threads. (default: 40)
  -v                  Verbose output, printing full URL and redirect location (if any) with the results. (default: false)

  -mc                 Match HTTP status codes, or "all" for everything. (default: 200-299,301,302,307,401,403,405,500)
  -ml                 Match amount of lines in response
  -mmode              Matcher set operator. Either of: and, or (default: or)
  -mr                 Match regexp
  -ms                 Match HTTP response size
  -mt                 Match how many milliseconds to the first response byte, either greater or less than. EG: >100 or <100
  -mw                 Match amount of words in response

  -fc                 Filter HTTP status codes from response. Comma separated list of codes and ranges
  -fl                 Filter by amount of lines in response. Comma separated list of line counts and ranges
  -fmode              Filter set operator. Either of: and, or (default: or)
  -fr                 Filter regexp
  -fs                 Filter HTTP response size. Comma separated list of sizes and ranges
  -ft                 Filter by number of milliseconds to the first response byte, either greater or less than. EG: >100 or <100
  -fw                 Filter by amount of words in response. Comma separated list of word counts and ranges

  -D                  DirSearch wordlist compatibility mode. Used in conjunction with -e flag. (default: false)
  -e                  Comma separated list of extensions. Extends FUZZ keyword.
  -enc                Encoders for keywords, eg. 'FUZZ:urlencode b64encode'
  -ic                 Ignore wordlist comments (default: false)
  -input-cmd          Command producing the input. --input-num is required when using this input method. Overrides -w.
  -input-num          Number of inputs to test. Used in conjunction with --input-cmd. (default: 100)
  -input-shell        Shell to be used for running command
  -mode               Multi-wordlist operation mode. Available modes: clusterbomb, pitchfork, sniper (default: clusterbomb)
  -request            File containing the raw http request
  -request-proto      Protocol to use along with raw request (default: https)
  -w                  Wordlist file path and (optional) keyword separated by colon. eg. '/path/to/wordlist:KEYWORD'

  -debug-log          Write all of the internal logging to the specified file.
  -o                  Write output to file
  -od                 Directory path to store matched results to.
  -of                 Output file format. Available formats: json, ejson, html, md, csv, ecsv (or, 'all' for all formats) (default: json)
  -or                 Don't create the output file if we don't have results (default: false)

  Fuzz file paths from wordlist.txt, match all responses but filter out those with content-size 42.
  Colored, verbose output.
    ffuf -w wordlist.txt -u -mc all -fs 42 -c -v

  Fuzz Host-header, match HTTP 200 responses.
    ffuf -w hosts.txt -u -H "Host: FUZZ" -mc 200

  Fuzz POST JSON data. Match all responses not containing text "error".
    ffuf -w entries.txt -u -X POST -H "Content-Type: application/json" \
      -d '{"name": "FUZZ", "anotherkey": "anothervalue"}' -fr "error"

  Fuzz multiple locations. Match only responses reflecting the value of "VAL" keyword. Colored.
    ffuf -w params.txt:PARAM -w values.txt:VAL -u -mr "VAL" -c

  More information and examples:

Updated on: 2024-Feb-16