Curl-url-http-3a-2f-2f169.254.169.254-2flatest-2fapi-2ftoken [work]

To mitigate SSRF risks, AWS introduced . It enforces a session-oriented defense-in-depth mechanism.

The response will include a token that can then be used to access other metadata. For example, once you have the token, you can use it like this:

The most famous attack is the . A former AWS employee exploited an SSRF vulnerability to reach http://169.254.169.254/latest/meta-data/iam/security-credentials/... and retrieved an IAM role with excessive permissions, then exfiltrated 100+ million customer records.

curl http://169.254.169.254/latest/api/token curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken

"AccessKeyId": "ASIAIOSFODNN7EXAMPLE", "SecretAccessKey": "wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY", "Token": "IQoJb3JpZ2luX2VjE...", "Expiration": "2025-12-03T18:32:39Z"

The metadata service has several use cases:

To understand the gravity of this keyword, you must understand the function of 169.254.169.254 . In cloud environments, every EC2 instance (virtual machine) asks itself: "Who am I? What permissions do I have?" To mitigate SSRF risks, AWS introduced

AWS introduced IMDSv2 to mitigate SSRF risks. IMDSv2 transitions metadata access into a session-oriented architecture. It requires a two-step handshake:

I can provide secure, actionable guidance or example-safe code patterns. Which of those would you like?

Once you have a token, you can use it to retrieve metadata: For example, once you have the token, you

The keyword curl-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fapi-2Ftoken may appear cryptic, but it points to a fundamental AWS security mechanism. The correct usage of curl with -X PUT and the required TTL header is the gateway to – a critical protection against SSRF attacks and credential theft.

This specific command is designed to target .