Insecure Access-Control-Allow-Origin detected.
- Rule ID: javascript_express_insecure_allow_origin
- Languages: javascript
- Source: insecure_allow_origin.yml
Description
Do not use unverified user-defined input to define Access-Control-Allow-Origin. This can lead to unintended user access to sensitive data.
Remediations
❌ Avoid defining origins with user input wherever possible.
✅ If unavoidable, be sure to verify the input or to use a safe-list.