macOS
Homebrewverified · 100%
brew install forbiddenlocal Homebrew formula metadata
brew / rank 5488
Install forbidden with Homebrew, Nix
Bypass 4xx HTTP response status codes and more. Version 13.4 via Homebrew; verified 2026-06-03. Also installable with nix: nix profile install nixpkgs#forbidden.
install
Additional install commands
Linux
Nixverified · 92%
nix profile install nixpkgs#forbiddennixpkgs package indexes · pkgs/by-name/fo/forbidden/package.nix · source: api.github.com
overview
Package summary
Bypass 4xx HTTP response status codes and more
Project links
Commands and aliases
- forbidden
- stresser
history
Project history and usage
Forbidden is a security testing CLI for attempting bypasses of 4xx HTTP response status codes and related web access-control behaviors. Its README describes separate forbidden and stresser commands and states that the tool is based on Python Requests, PycURL, and Python's HTTP client.
Project history
The public project history available from official sources is mostly README-level rather than narrative. The maintained README documents a mature command set, a v13.4 build artifact in source-install instructions, and a roadmap of future tests such as hop-by-hop headers, User-Agent headers, cookies, HTTP smuggling, CRLF, Log4j, and AWS metadata SSRF.
Adoption history
The README positions pip as the standard installation route and mentions a Homebrew formula as an alternative that is not maintained by the author. That combination places Forbidden in the common pentesting-tool distribution pattern of upstream Python packaging plus downstream CLI formulas.
How it is used
Typical use is to supply a target URL and choose test groups such as protocols, methods, uploads, overrides, headers, path mutations, encodings, authentication bypasses, redirects, and parser tests. The README cautions about proxies normalizing URLs, rate limiting, anti-bot protections, and engine-specific behavior.
Why package nerds care
Forbidden is package-nerd relevant as a compact example of a Python security CLI that depends on multiple HTTP engines to exercise edge cases that ordinary curl invocations cannot always produce, such as duplicate Host headers or requests without a Host header.
Timeline
- v13.4: README source-install instructions reference building forbidden-13.4-py3-none-any.whl.
- Current README: Homebrew installation is documented as an alternative not maintained by the author.
Related projects
- The README names Python Requests, PycURL, and Python HTTP Client as implementation engines and links to internal forbidden.py, test.py, and value.py files for the test definitions.
Sources
security posture
No protected-tool coverage found yet
No matching local secret-handling manifest was found for forbidden. Nucleus package metadata is still published here so future coverage has a stable package URL.
Install behavior
- No Homebrew bottle metadata was recorded.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
forbidden | executable | indexed executable | Discovered from the local executable index. |
stresser | executable | indexed executable | Discovered from the local executable index. |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-08-03
manager version13.4
manager updated2026-06-03
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:forbidden |
|---|---|
| Version | 13.4 |
| Package manager | Homebrew |
| Homepage | https://github.com/ivan-sincek/forbidden |
| Repository | https://github.com/ivan-sincek/forbidden |
| Last updated | 2026-06-03T10:43:07Z |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
forbidden
nix profile install nixpkgs#forbidden- normalized package name match
- Matched by: Forbidden
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- pkg.so package database
- pkgdb category and tag curation