Practical Security Guides For Your Team

Your server is sending two contradictory security instructions at the same time — one that says 'anyone on the internet can read our responses' and another that says 'include the user's private login credentials.' Browsers are smart enough to refuse this combination, so no one is being harmed right now. But this configuration signals a deeper misunderstanding of how cross-site access controls work, and a developer trying to 'fix' it the wrong way could accidentally create a real vulnerability.

Your application is configured to allow any website in the world to read responses from your server. Think of it like leaving your office filing cabinet unlocked — anyone who walks past can look inside. For pages that are genuinely public (like a marketing site), this is fine. For pages that return user data, account info, or internal details, it's a gap worth closing.