# kozmer/log4j-shell-poc

A Proof-Of-Concept for the CVE-2021-44228 vulnerability.

Repository: https://github.com/kozmer/log4j-shell-poc
Canonical: https://ross.abutalabs.com/products/log4j-shell-poc
Language: Python
License: MIT
License Family: permissive
Topics: log4j, cve-2021-44228, java, security
Archived: true
Last push: 2024-02-12T22:37:25+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 1727, "days_push": 933, "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 1848, forks 541 (observed 2026-08-28T04:05:43.655358+00:00)

## What it is
A proof-of-concept exploit tool for the Log4Shell vulnerability (CVE-2021-44228) in the Java log4j logging library. It automates setting up an LDAP and HTTP server, generates a JNDI payload, and includes a Dockerized vulnerable web application for testing.

## Use cases
- test my application for the log4j log4shell vulnerability
- reproduce CVE-2021-44228 in a lab environment
- learn how the log4j JNDI injection exploit works
- demonstrate log4shell impact to my team
- run a vulnerable log4j app in docker for security training
- generate a jndi ldap payload for log4j testing

## When to choose
- you need a simple, well-known PoC to verify whether a system is vulnerable to Log4Shell
- you want a hands-on educational lab with a Dockerized vulnerable app
- you need an automated LDAP/HTTP exploit server setup for a security demo

## When to avoid
- you need a production-grade vulnerability scanner for large-scale asset inventory
- you want a one-click exploit tool for offensive operations
- you need detection or mitigation tooling rather than exploitation
- your target runs a patched or non-Java stack

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: penetration-testing, security, developer-tools
- domain: security, penetration-testing, developer-tools
- platform: windows, python
- tags: log4j, cve-2021-44228, log4shell, exploit, proof-of-concept, reverse-shell, ldap, java, linux, macos, docker

## Member repositories
- kozmer/log4j-shell-poc (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:43.655358+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 2026-08-30T03:17:48.747014+00:00, confidence not recorded.
  - readme: https://github.com/kozmer/log4j-shell-poc (fetched 2026-08-28T04:05:43.655358+00:00, sha 6904393fcf31)
- Data as of 2026-08-30T08:39:29.467469+00:00.