Ffuf

FFUF

FFUF (Fuzz Faster U Fool) is a fast and flexible web fuzzer used for discovering hidden files, directories, subdomains, GET and POST parameters, and more. It is widely used in web application testing, especially during active reconnaissance and content discovery phases.

Common Options

Command	Description	Usage
-V	Show version information	ffuf -V
-ac	Automatically calibrate filtering options	ffuf -u https://target.com/FUZZ -w wordlist.txt -ac
-acc "STRING"	Custom auto-calibration string (can be used multiple times) – implies -ac	ffuf -u https://target.com/FUZZ -w wordlist.txt -acc "Welcome"
-c	Colorize output	ffuf -u https://target.com/FUZZ -w wordlist.txt -c
-config [FILE]	Load configuration from file	ffuf -config ~/.ffufrc
-s	Silent mode (suppress extra info)	ffuf -u https://target.com/FUZZ -w wordlist.txt -s
-sa	Stop on all error cases (implies -sf and -se)	ffuf -u https://target.com/FUZZ -w wordlist.txt -sa
-se	Stop on spurious errors	ffuf -u https://target.com/FUZZ -w wordlist.txt -se
-sf	Stop when > 95 % of responses are 403	ffuf -u https://target.com/FUZZ -w wordlist.txt -sf
-v	Verbose output (print full URL & redirect)	ffuf -u https://target.com/FUZZ -w wordlist.txt -v

Input Options

Command	Description	Usage
-D	DirSearch wordlist compatibility mode (use with -e)	ffuf -u https://target.com/FUZZ -w dirs.txt -D -e php,html
-e [EXT]	Comma-separated list of extensions (extends FUZZ)	ffuf -u https://target.com/FUZZ -w dirs.txt -e php,txt
-ic	Ignore wordlist comments	ffuf -u https://target.com/FUZZ -w dict.txt -ic
--input-cmd	Use command output as input (requires --input-num)	ffuf --input-cmd "seq 1 100" --input-num 100 -u https://target.com/id=FUZZ
--input-num [NUM]	Number of inputs to test with --input-cmd	ffuf --input-cmd "cat users.txt" --input-num 50 -u https://target.com/FUZZ
--input-shell [SHELL]	Shell used for --input-cmd	ffuf --input-shell /bin/zsh --input-cmd "printf '%s\n' {A..Z}" --input-num 26 -u https://target.com/FUZZ
-mode [TYPE]	Multi-wordlist mode: clusterbomb / pitchfork	ffuf -w users.txt:USER -w pass.txt:PASS -mode pitchfork -u https://target.com/login?u=USER&p=PASS
-request [FILE]	Use raw HTTP request from file	ffuf -request raw.txt -w dict.txt -u FUZZ
-request-proto [PROTO]	Protocol when using raw request (http/https)	ffuf -request raw.txt -request-proto http -w dict.txt

Headers, Cookies & Methods

Command	Description	Usage
-b "COOKIE=VALUE"	Add cookie header	ffuf -u https://target.com/dashboard -b "SESSION=FUZZ" -w tokens.txt
-ignore-body	Do not fetch response body	ffuf -u https://target.com/FUZZ -w list.txt -ignore-body
-r	Follow redirects	ffuf -u https://target.com/FUZZ -w list.txt -r
-recursion	Recursive scan (URL must end in FUZZ)	ffuf -u https://target.com/FUZZ -w dirs.txt -recursion
-recursion-depth [N]	Maximum recursion depth	ffuf -u https://target.com/FUZZ -w dirs.txt -recursion -recursion-depth 2
-recursion-strategy [STR]	Recursion strategy: default / greedy	ffuf -u https://target.com/FUZZ -w dirs.txt -recursion-strategy greedy
-replay-proxy [URL]	Replay matched requests through proxy	ffuf -u https://target.com/FUZZ -w list.txt -replay-proxy http://127.0.0.1:8081
-x [PROXY]	Send requests via proxy (HTTP/SOCKS5)	ffuf -u https://target.com/FUZZ -w list.txt -x socks5://127.0.0.1:9050

Filtering & Matching

Command	Description	Usage
-mr [REGEX]	Match body using regular expression	ffuf -u https://target.com/FUZZ -w list.txt -mr "^Admin"
-ms [BYTES]	Match exact response size	ffuf -u https://target.com/FUZZ -w list.txt -ms 1024
-mw [WORDS]	Match by word count	ffuf -u https://target.com/FUZZ -w list.txt -mw 50
-fl [LINES]	Filter by line count	ffuf -u https://target.com/FUZZ -w list.txt -fl 0
-fr [REGEX]	Filter responses matching regex	ffuf -u https://target.com/FUZZ -w list.txt -fr "Not Found"

Performance

Command	Description	Usage
-rate [NUM]	Limit requests per second	ffuf -u https://target.com/FUZZ -w wordlist.txt -rate 200
-maxtime [SEC]	Max total runtime	ffuf -u https://target.com/FUZZ -w wordlist.txt -maxtime 300
-maxtime-job [SEC]	Max runtime per job	ffuf -u https://target.com/FUZZ -w wordlist.txt -maxtime-job 60

Output & Format

Command	Description	Usage
-debug-log [FILE]	Write debug log to file	ffuf -u https://target.com/FUZZ -w list.txt -debug-log ffuf.log
-od [DIR]	Directory to store matched results	ffuf -u https://target.com/FUZZ -w list.txt -od ./matched
-or	Skip creating output file when no results	ffuf -u https://target.com/FUZZ -w list.txt -o results.json -or

Examples

Target URL

ffuf -u https://target.com/FUZZ -w /usr/share/wordlists/dirb/common.txt
# Output:
# /admin           [Status: 301, Size: 0, Words: 1, Lines: 1]
# /login           [Status: 200, Size: 1024, Words: 132, Lines: 15]

↑ Options

Wordlist Option

ffuf -u https://target.com/FUZZ -w wordlist.txt
# Output:
# /secret          [Status: 403, Size: 512, Words: 22, Lines: 4]

↑ Options

Input from Command

ffuf -u https://target.com/FUZZ --input-cmd "seq 1 100"
# Output:
# /12              [Status: 200, Size: 900, Words: 100, Lines: 10]

↑ Options

Fuzz Numeric Range

ffuf -u https://target.com/user?id=FUZZ --input-num 1-100
# Output:
# user?id=42       [Status: 200, Size: 1500, Words: 150, Lines: 20]

↑ Options

Filter by Status Code

ffuf -u https://target.com/FUZZ -w wordlist.txt -fc 404
# Output:
# All 404 responses are hidden

↑ Options

Match Specific Status Code

ffuf -u https://target.com/FUZZ -w wordlist.txt -mc 200
# Output:
# /dashboard       [Status: 200, Size: 2048, Words: 250, Lines: 25]

↑ Options

Filter by Word Count

ffuf -u https://target.com/FUZZ -w wordlist.txt -fw 0
# Output:
# Only responses with more than 0 words are shown

↑ Options

Match by Line Count

ffuf -u https://target.com/FUZZ -w wordlist.txt -ml 10
# Output:
# /help            [Status: 200, Size: 850, Words: 90, Lines: 10]

↑ Options

Filter by Size

ffuf -u https://target.com/FUZZ -w wordlist.txt -fs 1234
# Output:
# /about           [Status: 200, Size: 1234, Words: 140, Lines: 12]

↑ Options

Filter by Regex

ffuf -u https://target.com/FUZZ -w wordlist.txt --filter-regex "Not Found"
# Output:
# Only responses that do not contain "Not Found" in the body are shown

↑ Options

Output to File

ffuf -u https://target.com/FUZZ -w wordlist.txt -o results.txt
# Output:
# Results saved to results.txt

↑ Options

Specify Output Format

ffuf -u https://target.com/FUZZ -w wordlist.txt -o results.json -of json
# Output:
# Results saved in JSON format to results.json

↑ Options

Show Redirect Location

ffuf -u https://target.com/FUZZ -w wordlist.txt -or
# Output:
# /old-page        [Status: 301, Redirect: /new-page]

↑ Options

Custom Header Fuzzing

ffuf -u http://127.0.0.1/ -H "Host: FUZZ.target.com" -w subdomains.txt
# Output:
# Host: admin.target.com   [Status: 200, Size: 5120, Words: 500, Lines: 30]

↑ Options

Use POST Method

ffuf -X POST -d "username=admin&password=FUZZ" -u https://target.com/login -w rockyou.txt
# Output:
# Password guess "letmein" returns Status: 302 (Login success redirect)

↑ Options

POST Data with FUZZ

ffuf -X POST -d "q=FUZZ" -u https://target.com/search -w payloads.txt
# Output:
# Payload "admin" produces search results page (Status: 200)

↑ Options

Threads for Speed

ffuf -u https://target.com/FUZZ -w wordlist.txt -t 100
# Output:
# Much faster scan due to increased concurrency

↑ Options

Delay Between Requests

ffuf -u https://target.com/FUZZ -w wordlist.txt -p 0.5
# Output:
# Slower scan with 0.5s delay between requests (useful to avoid rate limits)

↑ Options

Set Request Timeout

ffuf -u https://target.com/FUZZ -w wordlist.txt --timeout 5
# Output:
# Requests that take more than 5 seconds will be skipped

↑ Options

See Also

• dirb
• gobuster
• wfuzz
• burpsuite
• httpx