: This is a link-local IP address. It is a non-routable address reserved for communication between a host and itself. AWS reserves this specific IP for the metadata service. Because it is a fixed IP, applications running inside the instance (like the AWS CLI or SDKs) always know exactly where to look for credentials without needing configuration.

It allows applications running on the instance to retrieve temporary AWS IAM credentials (AccessKeyId, SecretAccessKey, and Session Token) without hard-coding keys. The Attack: How SSRF Works

This is clearly targeting the – a well-known internal IP address ( 169.254.169.254 ) used by EC2 instances to expose instance metadata, including IAM role credentials.

: The vulnerable server, thinking it is fetching a legitimate resource, makes an internal HTTP request to the metadata IP.

Callback-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f -

: This is a link-local IP address. It is a non-routable address reserved for communication between a host and itself. AWS reserves this specific IP for the metadata service. Because it is a fixed IP, applications running inside the instance (like the AWS CLI or SDKs) always know exactly where to look for credentials without needing configuration.

It allows applications running on the instance to retrieve temporary AWS IAM credentials (AccessKeyId, SecretAccessKey, and Session Token) without hard-coding keys. The Attack: How SSRF Works : This is a link-local IP address

This is clearly targeting the – a well-known internal IP address ( 169.254.169.254 ) used by EC2 instances to expose instance metadata, including IAM role credentials. Because it is a fixed IP, applications running

: The vulnerable server, thinking it is fetching a legitimate resource, makes an internal HTTP request to the metadata IP. : The vulnerable server, thinking it is fetching