# cloudflare/flan

A pretty sweet vulnerability scanner

Repository: https://github.com/cloudflare/flan
Canonical: https://ross.abutalabs.com/products/flan
Language: Python
License: BSD-3-Clause
License Family: permissive
Archived: true
Last push: 2026-04-23T22:36:51+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 78, release rhythm 35, longevity 100
- inputs: {"age_days": 2501, "days_push": 132, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4166, forks 291 (observed 2026-08-28T04:08:37.918587+00:00)

## What it is
Flan Scan is a lightweight network vulnerability scanner from Cloudflare that wraps Nmap and the vulners script to detect open ports, service versions, and matching CVEs. It runs in a Docker container, supports Kubernetes deployment, and can push reports to S3 or GCS.

## Use cases
- scan my network for open ports and service versions
- find CVEs affecting hosts on my network
- run a vulnerability scanner in a container
- deploy nmap-based vulnerability scanning on Kubernetes
- generate vulnerability scan reports in latex or html
- upload nmap scan results to S3 or GCS

## When to choose
- you want a simple Dockerized wrapper around Nmap with CVE matching
- you need scheduled network vulnerability scans with report output in multiple formats
- you want scan results pushed to cloud storage buckets

## When to avoid
- you need an authenticated web application vulnerability scanner
- you want agent-based continuous asset monitoring rather than periodic network scans
- you need features beyond what Nmap and the vulners script provide

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: vulnerability-scanning, security, networking, cli, container-runtime
- domain: security, networking
- platform: python, cli
- tags: nmap-wrapper, cve-scanning, network-scanner, latex-reports, cloud-upload, devops, docker, kubernetes, linux

## Member repositories
- cloudflare/flan (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:37.918587+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 2026-08-29T18:22:46.398236+00:00, confidence not recorded.
  - readme: https://github.com/cloudflare/flan (fetched 2026-08-28T04:08:37.918587+00:00, sha a09e0a29edde)
- Data as of 2026-08-30T08:39:29.467469+00:00.