Refresh the target page or submit the login form to bypass the security check. (Command Line) You can send a manual request with the header using the curl -X POST "http://target-url.com" "X-Dev-Access: yes" "Content-Type: application/json" '"email":"target@email.com", "password":"any-password"' Use code with caution. Copied to clipboard 3. Using Browser Developer Tools Open the site and press Developer Tools Perform a login attempt. Right-click the failed request and select "Edit and Resend" (Firefox) or "Copy as fetch" Inject the header line: 'X-Dev-Access': 'yes' into the request headers and resend. Security Context In professional software development, this is considered a critical security risk The Danger:
Adding terms like ?admin=true or ?bypass=1 to the query string. x-dev-access yes
Depending on how you need to use this header, here are the standard formats: 1. HTTP Request (Raw) Refresh the target page or submit the login
Security tools like OWASP ZAP or Burp Suite run wordlists against target applications. These wordlists include common developer test configurations, such as X-Debug , X-Admin , X-Dev-Access , or X-Disable-Auth . When a fuzzing tool sends X-Dev-Access: yes and receives a 200 OK status code instead of a 401 Unauthorized , the bypass is instantly flagged. The Risk Matrix: Development vs. Production Using Browser Developer Tools Open the site and
The HTTP header x-dev-access: yes is a custom flag used by developers to bypass security controls or access debugging environments. While highly useful during software creation, it poses severe security risks if exposed to production environments. What is x-dev-access: yes?
Give you a list of currently available. Let me know what you'd like to dive deeper into! Enable Chrome Accessibility Experiment - GitHub Gist