nuclei README

The project's README from github.com/projectdiscovery/nuclei. As one markdown file: README.md.

nuclei

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Nuclei is a modern, high-performance vulnerability scanner that leverages simple YAML-based templates. It empowers you to design custom vulnerability detection scenarios that mimic real-world conditions, leading to zero false positives.



Table of Contents



Get Started

1. Nuclei CLI

Install Nuclei on your machine. Get started by following the installation guide here. Additionally, we provide a free cloud tier that comes with generous monthly free limits:

[!Important]

This project is in active development. Expect breaking changes with releases. Review the release changelog before updating.
This project is primarily built to be used as a standalone CLI tool. Running nuclei as a service may pose security risks. It's recommended to use with caution and additional security measures.

2. Pro and Enterprise Editions

For security teams and enterprises, we provide a cloud-hosted service built on top of Nuclei OSS, fine-tuned to help you continuously run vulnerability scans at scale with your team and existing workflows:

Sign up to Pro or Talk to our team if you have a large organization and complex requirements.



Documentation

Browse the full Nuclei documentation here. If you’re new to Nuclei, check out our foundational YouTube series.


Installation

nuclei requires go >= 1.24.2 to install successfully. Run the following command to get the repo:

go install -v github.com/projectdiscovery/nuclei/v3/cmd/nuclei@latest

To learn more about installing nuclei, see https://docs.projectdiscovery.io/tools/nuclei/install.

Command Line Flags

To display all the flags for the tool:

nuclei -h
Expand full help flags
Nuclei is a fast, template based vulnerability scanner focusing
on extensive configurability, massive extensibility and ease of use.

Usage:
  ./nuclei [flags]

Flags:
TARGET:
   -u, -target string[]          target URLs/hosts to scan
   -l, -list string              path to file containing a list of target URLs/hosts to scan (one per line)
   -targets-inline string        inline multiline target list (for use in template profiles)
   -eh, -exclude-hosts string[]  hosts to exclude to scan from the input list (ip, cidr, hostname)
   -resume string                resume scan from and save to specified file (clustering will be disabled)
   -sa, -scan-all-ips            scan all the IP's associated with dns record
   -iv, -ip-version string[]     IP version to scan of hostname (4,6) - (default 4)

TARGET-FORMAT:
   -im, -input-mode string        mode of input file (list, burp, jsonl, yaml, openapi, swagger, http) (default "list")
   -ro, -required-only            use only required fields in input format when generating requests
   -sfv, -skip-format-validation  skip format validation (like missing vars) when parsing input file
   -vtt, -vars-text-templating    enable text templating for vars in input file (only for yaml input mode)
   -vfp, -var-file-paths string[] list of yaml file contained vars to inject into yaml input

TEMPLATES:
   -nt, -new-templates                    run only new templates added in latest nuclei-templates release
   -ntv, -new-templates-version string[]  run new templates added in specific version
   -as, -automatic-scan                   automatic web scan using wappalyzer technology detection to tags mapping
   -t, -templates string[]                list of template or template directory to run (comma-separated, file)
   -turl, -template-url string[]          template url or list containing template urls to run (comma-separated, file)
   -ai, -prompt string                    generate and run template using ai prompt
   -w, -workflows string[]                list of workflow or workflow directory to run (comma-separated, file)
   -wurl, -workflow-url string[]          workflow url or list containing workflow urls to run (comma-separated, file)
   -validate                              validate the passed templates to nuclei
   -nss, -no-strict-syntax                disable strict syntax check on templates
   -td, -template-display                 displays the templates content
   -tl                                    list all templates matching current filters
   -tgl                                   list all available tags
   -sign                                  signs the templates with the private key defined in NUCLEI_SIGNATURE_PRIVATE_KEY env variable
   -code                                  enable loading code protocol-based templates
   -dut, -disable-unsigned-templates      disable running unsigned templates or templates with mismatched signature
   -esc, -enable-self-contained           enable loading self-contained templates
   -egm, -enable-global-matchers          enable loading global matchers templates
   -file                                  enable loading file templates

FILTERING:
   -a, -author string[]               templates to run based on authors (comma-separated, file)
   -tags string[]                     templates to run based on tags (comma-separated, file)
   -etags, -exclude-tags string[]     templates to exclude based on tags (comma-separated, file)
   -itags, -include-tags string[]     tags to be executed even if they are excluded either by default or configuration
   -id, -template-id string[]         templates to run based on template ids (comma-separated, file, allow-wildcard)
   -eid, -exclude-id string[]         templates to exclude based on template ids (comma-separated, file)
   -it, -include-templates string[]   path to template file or directory to be executed even if they are excluded either by default or configuration
   -et, -exclude-templates string[]   path to template file or directory to exclude (comma-separated, file)
   -em, -exclude-matchers string[]    template matchers to exclude in result
   -s, -severity value[]              templates to run based on severity. Possible values: info, low, medium, high, critical, unknown
   -es, -exclude-severity value[]     templates to exclude based on severity. Possible values: info, low, medium, high, critical, unknown
   -pt, -type value[]                 templates to run based on protocol type. Possible values: dns, file, http, headless, tcp, workflow, ssl, websocket, whois, code, javascript
   -ept, -exclude-type value[]        templates to exclude based on protocol type. Possible values: dns, file, http, headless, tcp, workflow, ssl, websocket, whois, code, javascript
   -tc, -template-condition string[]  templates to run based on expression condition

OUTPUT:
   -o, -output string            output file to write found issues/vulnerabilities
   -sresp, -store-resp           store all request/response passed through nuclei to output directory
   -srd, -store-resp-dir string  store all request/response passed through nuclei to custom directory (default "output")
   -silent                       display findings only
   -nc, -no-color                disable output content coloring (ANSI escape codes)
   -j, -jsonl                    write output in JSONL(ines) format
   -irr, -include-rr -omit-raw   include request/response pairs in the JSON, JSONL, and Markdown outputs (for findings only) [DEPRECATED use -omit-raw] (default true)
   -or, -omit-raw                omit request/response pairs in the JSON, JSONL, and Markdown outputs (for findings only)
   -ot, -omit-template           omit encoded template in the JSON, JSONL output
   -nm, -no-meta                 disable printing result metadata in cli output
   -ts, -timestamp               enables printing timestamp in cli output
   -rdb, -report-db string       nuclei reporting database (always use this to persist report data)
   -ms, -matcher-status          display match failure status
   -me, -markdown-export string  directory to export results in markdown format
   -se, -sarif-export string     file to export results in SARIF format
   -je, -json-export string      file to export results in JSON format
   -jle, -jsonl-export string    file to export results in JSONL(ine) format
   -pe, -pdf-export string       file to export results in PDF format
   -rd, -redact string[]         redact given list of keys from query parameter, request header and body

CONFIGURATIONS:
   -config string                        path to the nuclei configuration file
   -tp, -profile string                  template profile config file to run
   -tpl, -profile-list                   list community template profiles
   -fr, -follow-redirects                enable following redirects for http templates
   -fhr, -follow-host-redirects          follow redirects on the same host
   -mr, -max-redirects int               max number of redirects to follow for http templates (default 10)
   -dr, -disable-redirects               disable redirects for http templates
   -rc, -report-config string            nuclei reporting module configuration file
   -H, -header string[]                  custom header/cookie to include in all http request in header:value format (cli, file)
   -V, -var value                        custom vars in key=value format
   -r, -resolvers string                 file containing resolver list for nuclei
   -sr, -system-resolvers                use system DNS resolving as error fallback
   -dc, -disable-clustering              disable clustering of requests
   -passive                              enable passive HTTP response processing mode
   -fh2, -force-http2                    force http2 connection on requests
   -ev, -env-vars                        enable environment variables to be used in template
   -cc, -client-cert string              client certificate file (PEM-encoded) used for authenticating against scanned hosts
   -ck, -client-key string               client key file (PEM-encoded) used for authenticating against scanned hosts
   -ca, -client-ca string                client certificate authority file (PEM-encoded) used for authenticating against scanned hosts
   -sml, -show-match-line                show match lines for file templates, works with extractors only
   -ztls                                 use ztls library with autofallback to standard one for tls13 [Deprecated] autofallback to ztls is enabled by default
   -sni string                           tls sni hostname to use (default: input domain name)
   -dka, -dialer-keep-alive value        keep-alive duration for network requests.
   -lfa, -allow-local-file-access        allow all templates in the run to read any file on the system (not just payloads)
   -lna, -restrict-local-network-access  blocks connections to the local / private network
   -i, -interface string                 network interface to use for network scan
   -at, -attack-type string              type of payload combinations to perform (batteringram,pitchfork,clusterbomb)
   -sip, -source-ip string               source ip address to use for network scan
   -rsr, -response-size-read int         max response size to read in bytes
   -rss, -response-size-save int         max response size to read in bytes (default 1048576)
   -reset                                reset removes all nuclei configuration and data files (including nuclei-templates)
   -tlsi, -tls-impersonate               enable experimental client hello (ja3) tls randomization
   -hae, -http-api-endpoint string       experimental http api endpoint

INTERACTSH:
   -iserver, -interactsh-server string  interactsh server url for self-hosted instance (default: oast.pro,oast.live,oast.site,oast.online,oast.fun,oast.me)
   -itoken, -interactsh-token string    authentication token for self-hosted interactsh server
   -interactions-cache-size int         number of requests to keep in the interactions cache (default 5000)
   -interactions-eviction int           number of seconds to wait before evicting requests from cache (default 60)
   -interactions-poll-duration int      number of seconds to wait before each interaction poll request (default 5)
   -interactions-cooldown-period int    extra time for interaction polling before exiting (default 5)
   -ni, -no-interactsh                  disable interactsh server for OAST testing, exclude OAST based templates

FUZZING:
   -ft, -fuzzing-type string           overrides fuzzing type set in template (replace, prefix, postfix, infix)
   -fm, -fuzzing-mode string           overrides fuzzing mode set in template (multiple, single)
   -fuzz                               enable loading fuzzing templates (Deprecated: use -dast instead)
   -dast                               enable / run dast (fuzz) nuclei templates
   -dts, -dast-server                  enable dast server mode (live fuzzing)
   -dtr, -dast-report                  write dast scan report to file
   -dtst, -dast-server-token string    dast server token (optional)
   -dtsa, -dast-server-address string  dast server address (default "localhost:9055")
   -dfp, -display-fuzz-points          display fuzz points in the output for debugging
   -fuzz-param-frequency int           frequency of uninteresting parameters for fuzzing before skipping (default 10)
   -fa, -fuzz-aggression string        fuzzing aggression level controls payload count for fuzz (low, medium, high) (default "low")
   -cs, -fuzz-scope string[]           in scope url regex to be followed by fuzzer
   -cos, -fuzz-out-scope string[]      out of scope url regex to be excluded by fuzzer

UNCOVER:
   -uc, -uncover                  enable uncover engine
   -uq, -uncover-query string[]   uncover search query
   -ue, -uncover-engine string[]  uncover search engine (shodan,censys,fofa,shodan-idb,quake,hunter,zoomeye,netlas,criminalip,publicwww,hunterhow,google) (default shodan)
   -uf, -uncover-field string     uncover fields to return (ip,port,host) (default "ip:port")
   -ul, -uncover-limit int        uncover results to return (default 100)
   -ur, -uncover-ratelimit int    override ratelimit of engines with unknown ratelimit (default 60 req/min) (default 60)

RATE-LIMIT:
   -rl, -rate-limit int               maximum number of requests to send per second (default 150)
   -rld, -rate-limit-duration value   maximum number of requests to send per second (default 1s)
   -per-host-rate-limit               enable pe

nuclei (projectdiscovery/nuclei)

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32.1K ·GitHub
Что это такое?Быстрый сканер уязвимостей с открытым исходным кодом. Он запускает проверки в виде YAML-шаблонов и ищет проблемы безопасности в приложениях, API, сетях, DNS и облачных конфигурациях. Набор проверок пополняет большое мировое сообщество специалистов по безопасности.
Это программа для командной строки или веб-сервис?Прежде всего это отдельный консольный сканер. Дополнительно есть бесплатный облачный тариф для хранения результатов, а также платные редакции Pro и Enterprise для команд, которые сканируют в больших масштабах.
Как его установить и просканировать первую цель?Установите бинарник — он написан на Go, так что сработает go install -v github.com/projectdiscovery/nuclei/v3/cmd/nuclei@latest (нужен Go 1.24.2+), либо возьмите готовую сборку из релизов. Затем запускайте сканирование командой nuclei -u или укажите файл со списком целей через -l.
Проверки на уязвимости нужно писать самому?Нет — проверки представляют собой YAML-шаблоны, которые поддерживают тысячи специалистов по безопасности, добавляющих покрытие для свежих уязвимостей. Nuclei скачивает шаблоны на ваш компьютер, а при желании можно писать и свои.
На что стоит обратить внимание перед обновлением?Два момента. Во-первых, проект активно развивается, поэтому между релизами случаются несовместимые изменения — перед обновлением загляните в changelog. Во-вторых, это инструмент для командной строки: запускать его как сервис может быть небезопасно.
Как выглядит шаблон Nuclei?Это небольшой YAML-файл, в котором описано, какие запросы отправлять (HTTP, DNS, TCP и другие протоколы) и какие matcher'ы определяют, что уязвимость присутствует. Благодаря этому логика обнаружения остаётся читаемой, и её легко делиться или дорабатывать.
Может ли ИИ написать шаблон за меня?Да. Флаг -ai / -prompt создаёт шаблон по описанию на обычном языке и сразу запускает его против вашей цели.
Он только проверяет известные сценарии или умеет ещё и фаззить?В нём есть встроенная поддержка фаззинга через -fuzzing-type, а в шаблонах можно использовать классические режимы атак с payload'ами: batteringram, pitchfork и clusterbomb.
Какие форматы входных данных с целями он принимает?По умолчанию — простые текстовые списки, а также выгрузки из Burp Suite, JSONL, YAML, OpenAPI, Swagger и файлы с сырым HTTP; формат выбирается флагом -im.
What are similar projects?shannon, 0, zaproxy, xray, vuls, gitleaks, nuclei-templates, Cybermes
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