{"id":29167318,"url":"https://github.com/rarecoil/fuzz-me-maybe","last_synced_at":"2026-04-29T07:35:17.242Z","repository":{"id":34243451,"uuid":"172824155","full_name":"rarecoil/fuzz-me-maybe","owner":"rarecoil","description":"An environment-variable-based fuzzing harness for Node applications.","archived":false,"fork":false,"pushed_at":"2023-01-03T16:55:28.000Z","size":335,"stargazers_count":1,"open_issues_count":11,"forks_count":1,"subscribers_count":1,"default_branch":"master","last_synced_at":"2025-08-09T06:38:15.374Z","etag":null,"topics":["fuzzing","node-fuzzer","nodejs","radamsa"],"latest_commit_sha":null,"homepage":"","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/rarecoil.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2019-02-27T02:02:31.000Z","updated_at":"2019-11-06T17:09:07.000Z","dependencies_parsed_at":"2023-01-15T05:35:54.856Z","dependency_job_id":null,"html_url":"https://github.com/rarecoil/fuzz-me-maybe","commit_stats":null,"previous_names":[],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/rarecoil/fuzz-me-maybe","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rarecoil%2Ffuzz-me-maybe","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rarecoil%2Ffuzz-me-maybe/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rarecoil%2Ffuzz-me-maybe/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rarecoil%2Ffuzz-me-maybe/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/rarecoil","download_url":"https://codeload.github.com/rarecoil/fuzz-me-maybe/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/rarecoil%2Ffuzz-me-maybe/sbom","scorecard":{"id":762247,"data":{"date":"2025-08-11","repo":{"name":"github.com/rarecoil/fuzz-me-maybe","commit":"c655ce70b836ac9f0d6846a2b7b88f347deb1067"},"scorecard":{"version":"v5.2.1-40-gf6ed084d","commit":"f6ed084d17c9236477efd66e5b258b9d4cc7b389"},"score":1.7,"checks":[{"name":"Code-Review","score":0,"reason":"Found 0/15 approved changesets -- score normalized to 0","details":null,"documentation":{"short":"Determines if the project requires human code review before pull requests (aka merge requests) are merged.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#code-review"}},{"name":"SAST","score":0,"reason":"no SAST tool detected","details":["Warn: no pull requests merged into dev branch"],"documentation":{"short":"Determines if the project uses static code analysis.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#sast"}},{"name":"Pinned-Dependencies","score":-1,"reason":"no dependencies found","details":null,"documentation":{"short":"Determines if the project has declared and pinned the dependencies of its build process.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#pinned-dependencies"}},{"name":"Packaging","score":-1,"reason":"packaging workflow not detected","details":["Warn: no GitHub/GitLab publishing workflow detected."],"documentation":{"short":"Determines if the project is published as a package that others can easily download, install, easily update, and uninstall.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#packaging"}},{"name":"Token-Permissions","score":-1,"reason":"No tokens found","details":null,"documentation":{"short":"Determines if the project's workflows follow the principle of least privilege.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#token-permissions"}},{"name":"Dangerous-Workflow","score":-1,"reason":"no workflows found","details":null,"documentation":{"short":"Determines if the project's GitHub Action workflows avoid dangerous patterns.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#dangerous-workflow"}},{"name":"Maintained","score":0,"reason":"0 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 0","details":null,"documentation":{"short":"Determines if the project is \"actively maintained\".","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#maintained"}},{"name":"Binary-Artifacts","score":10,"reason":"no binaries found in the repo","details":null,"documentation":{"short":"Determines if the project has generated executable (binary) artifacts in the source repository.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#binary-artifacts"}},{"name":"CII-Best-Practices","score":0,"reason":"no effort to earn an OpenSSF best practices badge detected","details":null,"documentation":{"short":"Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#cii-best-practices"}},{"name":"Fuzzing","score":0,"reason":"project is not fuzzed","details":["Warn: no fuzzer integrations found"],"documentation":{"short":"Determines if the project uses fuzzing.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#fuzzing"}},{"name":"License","score":10,"reason":"license file detected","details":["Info: project has a license file: LICENSE:0","Info: FSF or OSI recognized license: MIT License: LICENSE:0"],"documentation":{"short":"Determines if the project has defined a license.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#license"}},{"name":"Signed-Releases","score":-1,"reason":"no releases found","details":null,"documentation":{"short":"Determines if the project cryptographically signs release artifacts.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#signed-releases"}},{"name":"Branch-Protection","score":0,"reason":"branch protection not enabled on development/release branches","details":["Warn: branch protection not enabled for branch 'master'"],"documentation":{"short":"Determines if the default and release branches are protected with GitHub's branch protection settings.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#branch-protection"}},{"name":"Security-Policy","score":0,"reason":"security policy file not detected","details":["Warn: no security policy file detected","Warn: no security file to analyze","Warn: no security file to analyze","Warn: no security file to analyze"],"documentation":{"short":"Determines if the project has published a security policy.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#security-policy"}},{"name":"Vulnerabilities","score":0,"reason":"51 existing vulnerabilities detected","details":["Warn: Project is vulnerable to: GHSA-968p-4wvh-cqc8","Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92","Warn: Project is vulnerable to: GHSA-6chw-6frg-f759","Warn: Project is vulnerable to: GHSA-v88g-cgmw-v5xw","Warn: Project is vulnerable to: GHSA-93q8-gq69-wqmw","Warn: Project is vulnerable to: GHSA-v6h2-p8h4-qcjw","Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg","Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275","Warn: Project is vulnerable to: GHSA-gxpj-cx7g-858c","Warn: Project is vulnerable to: GHSA-w573-4hg7-7wgq","Warn: Project is vulnerable to: GHSA-fjxv-7rqg-78g4","Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3","Warn: Project is vulnerable to: MAL-2023-462","Warn: Project is vulnerable to: GHSA-w457-6q6x-cgp9","Warn: Project is vulnerable to: GHSA-62gr-4qp9-h98f","Warn: Project is vulnerable to: GHSA-f52g-6jhx-586p","Warn: Project is vulnerable to: GHSA-2cf5-4w76-r9qv","Warn: Project is vulnerable to: GHSA-3cqr-58rm-57f8","Warn: Project is vulnerable to: GHSA-g9r4-xpmj-mj65","Warn: Project is vulnerable to: GHSA-q2c6-c6pm-g3gh","Warn: Project is vulnerable to: GHSA-765h-qjxv-5f44","Warn: Project is vulnerable to: GHSA-f2jv-r9rf-7988","Warn: Project is vulnerable to: GHSA-43f8-2h32-f4cj","Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37","Warn: Project is vulnerable to: GHSA-896r-f27r-55mw","Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h","Warn: Project is vulnerable to: GHSA-6c8f-qphg-qjgp","Warn: Project is vulnerable to: GHSA-p6mc-m468-83gw","Warn: Project is vulnerable to: GHSA-29mw-wpgm-hmr9","Warn: Project is vulnerable to: GHSA-35jh-r3h4-6jhm","Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv","Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3","Warn: Project is vulnerable to: GHSA-vh95-rmgr-6w4m","Warn: Project is vulnerable to: GHSA-xvch-5gv4-984h","Warn: Project is vulnerable to: GHSA-5fw9-fq32-wv5p","Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9","Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp","Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6","Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw","Warn: Project is vulnerable to: GHSA-3jfq-g458-7qm9","Warn: Project is vulnerable to: GHSA-r628-mhmh-qjhw","Warn: Project is vulnerable to: GHSA-9r2w-394v-53qc","Warn: Project is vulnerable to: GHSA-5955-9wpr-37jh","Warn: Project is vulnerable to: GHSA-qq89-hq3f-393p","Warn: Project is vulnerable to: GHSA-f5x3-32g6-xq36","Warn: Project is vulnerable to: GHSA-jgrx-mgxx-jf9v","Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3","Warn: Project is vulnerable to: GHSA-6fc8-4gx4-v693","Warn: Project is vulnerable to: GHSA-3h5v-q93c-6h6q","Warn: Project is vulnerable to: GHSA-c4w7-xm78-47vh","Warn: Project is vulnerable to: GHSA-p9pc-299p-vxgp"],"documentation":{"short":"Determines if the project has open, known unfixed vulnerabilities.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#vulnerabilities"}}]},"last_synced_at":"2025-08-22T23:46:01.774Z","repository_id":34243451,"created_at":"2025-08-22T23:46:01.774Z","updated_at":"2025-08-22T23:46:01.774Z"},"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":32416146,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-04-29T06:29:02.080Z","status":"ssl_error","status_checked_at":"2026-04-29T06:29:00.631Z","response_time":110,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["fuzzing","node-fuzzer","nodejs","radamsa"],"created_at":"2025-07-01T09:09:33.027Z","updated_at":"2026-04-29T07:35:17.225Z","avatar_url":"https://github.com/rarecoil.png","language":"JavaScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# fuzz-me-maybe\n\n[![Build Status](https://travis-ci.org/rarecoil/fuzz-me-maybe.svg?branch=master)](https://travis-ci.org/rarecoil/fuzz-me-maybe) [![Known Vulnerabilities](https://snyk.io/test/github/rarecoil/fuzz-me-maybe/badge.svg?targetFile=package.json)](https://snyk.io/test/github/rarecoil/fuzz-me-maybe?targetFile=package.json) [![Dependencies](https://david-dm.org/rarecoil/fuzz-me-maybe.svg)](https://david-dm.org/)\n\n### An environment-variable-based fuzzing harness for Node applications\n\n**fuzz-me-maybe** is a small harness that makes instrumentation of various network protocols easily. It is a small module that offers some command-line input directly into a [radamsa](https://gitlab.com/akihe/radamsa)+[sinkdweller](https://github.com/rarecoil/sinkdweller) fuzzing system.\n\nUsing fuzz-me-maybe, you can grab an off-the-shelf module (e.g. rhea, mqtt-packet) and instrument it with this wrapper script, which will allow you to interact with the fuzzer from environment variables. This allows you to make fuzzers out of any off-the-shelf node module by hooking/instrumenting it directly, versus needing to rewrite potentially complex upstream logic.\n\n\n## Basic Usage\n\nBasic usage (no custom parameters) is as follows. Take code such as:\n\n````js\nfunction outputToStream(stream, data) {\n    stream.write(data);\n}\n````\n\nand change it to:\n\n````js\nconst FuzzMeMaybe = require('fuzz-me-maybe');\nlet fuzzer = new FuzzMeMaybe();\n\nfunction outputToStream(stream, data) {\n    stream.write(fuzzer.maybe(data));\n}\n````\n\n## Default environment variable control\n\n`fuzz-me-maybe` turns **off** the fuzzer by default. This is such that it will allow tests and other systems to run unless there are explicit flags turning on the fuzzer, and lets you leave fuzzing infrastructure in place. To enable your fuzzer, you will need to set `$ENVPREFIX_ENABLED=1` on your command line (by default, this environment prefix is `FUZZER_`, so you would set `FUZZER_ENABLED=1` to turn on the fuzzer.)\n\nIf you want to show your I/O (for example, to save testcases or a log of fuzz output), you can show it by setting `$ENVPREFIX_SHOW_IO=1` on your command line to print to stdout, and `$ENVPREFIX_SHOW_IO=1 $ENVPREFIX_SHOW_IO_STDERR=1`, where `$ENVPREFIX` is either `FUZZER` (the default) or what you set with the `registerEnvironmentPrefix` method.\n\n\n## Custom environment flags\n\n`fuzz-me-maybe` allows for boolean, counted, and string matching flags. To get more functionality, tag your fuzzer calls for enable/disable:\n\n````js\nconst FuzzMeMaybe = require('fuzz-me-maybe');\nlet fuzzer = new FuzzMeMaybe();\nfuzzer.registerEnvironmentPrefix('MYFUZZER_');\nfuzzer.registerFlag('output_to_stream', 'boolean', true);\n\nfunction outputToStream(stream, data) {\n    stream.write(fuzzer.maybe(data, 'output_to_stream'));\n}\n````\n\nNow, all calls with the tag `'output_to_stream'` can be turned off on the command line by setting `MYFUZZER_OUTPUT_TO_STREAM=0`. In this case, the `maybe` method will no longer fire.\n\n\n#### Integer (count) skips\n\nYou may also build integer skips:\n\n````js\nconst FuzzMeMaybe = require('fuzz-me-maybe');\nlet fuzzer = new FuzzMeMaybe();\nfuzzer.registerEnvironmentPrefix('MYFUZZER_');\nfuzzer.registerFlag('output_to_stream', 'skip_first', 10);\n\nfunction outputToStream(stream, data) {\n    stream.write(fuzzer.maybe(data, 'output_to_stream'));\n}\n````\n\nThis `skip_first` flag will now skip the first `10` calls of the `output_to_stream` flag. To change this, you can set the environment variable `MYFUZZER_OUTPUT_TO_STREAM_SKIP_FIRST=20`, and then the first 20 calls will be skipped instead.\n\n\n#### String skips\n\nSimilar to integer skips, you can also register a flag to not allow for specific strings:\n\n````js\nconst FuzzMeMaybe = require('fuzz-me-maybe');\nlet fuzzer = new FuzzMeMaybe();\nfuzzer.registerEnvironmentPrefix('MYFUZZER_');\nfuzzer.registerFlag('output_to_stream', 'skip_string', 'ACCESS_KEY');\n\nfunction outputToStream(stream, data) {\n    stream.write(fuzzer.maybe(data, 'output_to_stream'));\n}\n````\n\nIn this case, if `data` contains the string `ACCESS_KEY`, it will not fuzz `data`. This can be changed on the command line with the environment variable `MYFUZZER_OUTPUT_TO_STREAM_SKIP_STRING=\"POST\"`, for example, to change the skipped string to `POST` instead.\n\n## License\n\nMIT License.","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frarecoil%2Ffuzz-me-maybe","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frarecoil%2Ffuzz-me-maybe","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frarecoil%2Ffuzz-me-maybe/lists"}