# chenjj/CORScanner

🎯 Fast CORS misconfiguration vulnerabilities scanner

Repository: https://github.com/chenjj/CORScanner
Canonical: https://ross.abutalabs.com/products/corscanner
Homepage: https://pypi.org/project/cors/
Language: Python
License: MIT
License Family: permissive
Topics: cors, cors-misconfigurations, cors-policy, python, web-security, vulnerability-scanners, cors-scanner, python3
Last push: 2021-11-25T07:25:11+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3041, "days_push": 1742, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1162, forks 183 (observed 2026-08-28T04:03:49.542761+00:00)

## What it is
CORScanner is a fast Python tool for detecting CORS misconfiguration vulnerabilities in websites, using gevent for high-concurrency network scanning. It can be used as a CLI tool or imported as a Python library, and supports scanning domains, URLs, and IP ranges at scale.

## Use cases
- scan websites for CORS misconfiguration vulnerabilities
- check if a domain has an insecure CORS policy
- bulk scan a list of urls for cors issues
- audit cross-origin resource sharing headers during a pentest
- find reflect origin cors vulnerabilities
- integrate cors checking into a python security tool

## When to choose
- you need a fast, purpose-built scanner for CORS misconfigurations
- you want to scan large lists of domains concurrently
- you need a CORS check you can call from Python code
- you are a penetration tester auditing web application security

## When to avoid
- you need a general-purpose web vulnerability scanner covering many vulnerability classes
- you need actively developed tooling with recent updates and support
- you need GUI-based scanning or reporting
- you need to detect vulnerabilities other than CORS issues

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: vulnerability-scanning, security, http-client, cli
- domain: security, penetration-testing, web-development, developer-tools
- platform: python, cli, windows, cross-platform
- tags: cors, cors-misconfiguration, web-security, penetration-testing, python3, gevent, security-scanner, linux, macos

## Member repositories
- chenjj/CORScanner (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:49.542761+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:31:37.489100+00:00, confidence not recorded.
  - readme: https://github.com/chenjj/CORScanner (fetched 2026-08-28T04:03:49.542761+00:00, sha c052c701108a)
  - homepage: https://pypi.org/project/cors/ (fetched 2026-08-29T12:36:08.433782+00:00, sha 4b4e8fead74a)
  - registry_pypi: https://pypi.org/pypi/corscanner/json (fetched 2026-08-29T12:36:08.442599+00:00, sha 832e0fadb6e1)
- Data as of 2026-08-30T08:39:29.467469+00:00.