testing-for-open-redirect-vulnerabilities

name	testing-for-open-redirect-vulnerabilities
description	Identify and test open redirect vulnerabilities in web applications by analyzing URL redirection parameters, bypass techniques, and exploitation chains for phishing and token theft. Use when working with testing for open redirect vulnerabilities.
domain	cybersecurity
tags	["open-redirect","url-redirect","phishing","owasp","url-validation","redirect-bypass","unvalidated-redirect"]
subdomain	web-application-security
version	1.0
author	oyi77
license	Apache-2.0
nist_csf	["PR.PS-01","ID.RA-01","PR.DS-10","DE.CM-01"]

Testing For Open Redirect Vulnerabilities

Overview

Cybersecurity skill for testing for open redirect vulnerabilities. Follows industry best practices and security standards.

When to Use

Trigger phrases:

• "testing for open redirect vulnerabilities"

• "Identify and test open redirect vulnerabilities in web applications by analyzing"

• When testing login/logout flows that redirect users to specified URLs

• During assessment of OAuth authorization endpoints with redirect_uri parameters

• When auditing applications with URL parameters (next, url, redirect, return, goto, target)

• During phishing simulation to chain open redirects with credential harvesting

• When testing SSO implementations for redirect validation weaknesses

When NOT to Use

• When you lack proper authorization for testing
• For production systems without change management
• When the task requires legal or compliance expertise beyond technical scope

Prerequisites

• Burp Suite or OWASP ZAP for intercepting redirect requests
• Collection of open redirect bypass payloads
• External domain or Burp Collaborator for redirect confirmation
• Understanding of URL parsing and encoding schemes
• Browser with developer tools for observing redirect chains
• Knowledge of HTTP 301/302/303/307/308 redirect status codes

Legal Notice: This skill is for authorized security testing and educational purposes only. Unauthorized use against systems you do not own or have written permission to test is illegal and may violate computer fraud laws.

Workflow

# Example: IOC detection
import re

IOC_PATTERNS = {
    "ip": r"\b(?:\d{1,3}\.){3}\d{1,3}\b",
    "domain": r"\b[a-z0-9-]+\.[a-z]{2,}\b",
    "hash_md5": r"\b[a-f0-9]{32}\b",
    "hash_sha256": r"\b[a-f0-9]{64}\b",
}

def extract_iocs(text: ) -> :
     {k: re.findall(v, text)  k, v  IOC_PATTERNS.items()}