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Open Redirect Vulnerability Testing

Guides an agent through finding and testing open redirect bugs in web apps

Stars
10,230
Licence
MIT
Files
1 file

What it does

When active, this skill gives the agent a structured checklist for spotting open redirect flaws, where a website sends visitors to an attacker-chosen address. It covers where to look (redirect parameters, login and OAuth flows), common bypass tricks such as encoding, double slashes and domain spoofing, and how a minor redirect can be chained into bigger issues like OAuth token theft or SSRF. It is written for offensive security testing, so the agent acts as a tester working through the checklist and suggesting next steps.

Great for

  • Security testers and bug bounty hunters checking web apps they are authorised to test
  • Developers or students learning how redirect validation fails and how to fix it
  • Security teams building a review checklist for redirect and OAuth handling

Skip it if

  • Testing websites or apps you do not own or have written permission to test, since probing others' systems can be illegal and harmful
  • Non-security tasks: the content is attack-oriented and offers no general redirect-building help

Try asking

  • “Review https://myapp.example/login?next= for open redirect issues and suggest bypass tests I can run on my own staging site”
  • “Walk me through the OAuth redirect_uri checks for my app and what a partial allowlist flaw looks like”
  • “Create a checklist of redirect parameter names to audit in our codebase”
Step-by-step guide: how to use Open Redirect Vulnerability TestingInstall, first run, examples, tips and FAQs

Install in 3 steps

  1. 1

    Download the skill

    The ZIP contains the 1 original files, the MIT licence and an attribution note.

    offensive-open-redirect.zip
  2. 2

    Add it to your agent

    Claude Code (all projects)

    mkdir -p ~/.claude/skills && unzip offensive-open-redirect.zip -d ~/.claude/skills/

    Claude Code / Agent SDK (this project only)

    mkdir -p .claude/skills && unzip offensive-open-redirect.zip -d .claude/skills/

    Claude apps (web/desktop): Settings → Capabilities → Skills → Upload skill, and choose the ZIP.

  3. 3

    Ask for the task

    No special command needed — the agent reads the skill's description and loads it when your request matches. Try one of the prompts above.

Get better results

  • State that you have authorisation for the target and its scope so the agent keeps tests within bounds
  • Paste the specific endpoint or code snippet so the agent can judge which techniques apply
  • Ask for remediation alongside findings, such as strict allowlists and exact redirect_uri matching

What's inside

  • SKILL.md

Redistributed unmodified from SnailSploit/Claude-Red under the MIT licence. The assessment was drafted with AI from the skill's files on 2026-10-29. Skills can instruct your agent to run code — read SKILL.md and any scripts before installing.