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

If an attacker can cause a vulnerable application (e.g., a PHP, Node.js, or Java app that follows external URLs) to make a request to this decoded endpoint, the server will return the active IAM role's .

Notes and risks:

Thus, finding this exact encoded string in your logs or exploit payloads suggests an attacker is actively probing for metadata service exposure. If an attacker can cause a vulnerable application (e

Decoded (percent/hex-style where "-2F" = "/", "-3A" = ":") it becomes: callback-url-http://169.254.169.254/latest/meta-data/iam/security-credentials/ If an attacker can cause a vulnerable application (e

Due to the prevalence of SSRF attacks, AWS introduced the . If an attacker can cause a vulnerable application (e

The client then includes that token in a custom HTTP header for all subsequent GET requests.