FAQ-001277 - Open Redirect and Redirect Security / Component-Specific Redirect Security

To securely handle URL redirection from custom components and Lightning components: 1. **Validate and Sanitize URLs**: Always validate and sanitize user-provided URLs to prevent open redirect vulnerabilities. 2. **Use Hardcoded Redirects**: Whenever possible, rely on predefined, hardcoded URLs rather than dynamic user input. 3. **Implement Allowlist Validation**: Ensure user-provided URLs match an allowlist of approved domains or paths. 4. **Restrict to Salesforce Ecosystem**: Enforce that return URLs start with a forward slash (`/`) to limit redirection within Salesforce and prevent external redirects. 5. **Validate Input Parameters**: Validate all input parameters to prevent open redirection vulnerabilities. 6. **Avoid Sensitive Information**: Don't expose sensitive information in URLs during redirection. These practices help maintain security, prevent misuse, and ensure compliance during security reviews.

The FAQ content is largely accurate and well-structured. I made two minor improvements for clarity and modern security terminology: (1) Changed 'whitelist' to 'allowlist' to align with current inclusive terminology standards in security documentation, and (2) Changed 'Do not expose' to 'Don't expose' to follow the conversational tone guidelines. The structure and all key security points were preserved. For security rules selected: - ApexOpenRedirect: This rule directly detects open redirect vulnerabilities in Apex code, which is exactly what this FAQ is teaching developers to prevent. The FAQ's advice on validating URLs, using hardcoded redirects, implementing allowlist validation, and restricting redirects directly addresses the security issues this rule identifies. - AvoidJavaScriptInUrls: This rule prevents JavaScript injection in URLs, which relates to the FAQ's guidance on validating and sanitizing URLs and avoiding sensitive information exposure in redirects. The FAQ's recommendations help prevent the type of URL-based vulnerabilities this rule detects.