CORS misconfigurations can create serious security vulnerabilities by allowing unauthorized access to web resources. DNS rebinding is another attack that exploits server configurations to access local network resources. Understanding CORS mechanics and carefully implementing policies can prevent these issues. Common mistakes include improper domain validation and overly broad rules. Mitigations include using exact domain matches and validating host headers.
Table of contents
What is CORS and how does it work?Common mistakes when implementing CORSHow can attackers exploit a CORS misconfiguration?What impact can a CORS misconfiguration have?Real-world examplesDNS rebindingConclusionTags:Written by1 Comment
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