Fetch-url-http-3a-2f-2f169.254.169.254-2flatest-2fmeta Data-2fiam-2fsecurity Credentials-2f Jun 2026

The server, running inside an EC2 instance, will happily fetch the metadata service and return the list of IAM roles. From there, the attacker requests .../security-credentials/MyAppRole and receives live AWS keys.

– How attackers might target metadata endpoints through SSRF, and how to harden applications using IMDSv2 (session-oriented metadata service), firewall rules, and metadata-request filtering.

# Step 1: Get a token (valid for up to 6 hours) TOKEN=$(curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600") The server, running inside an EC2 instance, will

When an AWS EC2 instance is assigned an Identity and Access Management (IAM) role, AWS temporary security credentials are automatically attached to it. The operating system fetches these keys from the following path:

In many architectures, applications do not need to initiate arbitrary outbound HTTP requests at all. If they do, consider: # Step 1: Get a token (valid for

The innocuous-looking string fetch-url-http-3A-2F-2F169.254.169.254-2Flatest-2Fmeta data-2Fiam-2Fsecurity credentials-2F is a battle cry for cloud attackers. It represents the simplest, most reliable way to elevate from a minor injection flaw to full AWS account compromise.

The attacker receives the temporary credentials of the IAM role attached to that instance. It represents the simplest, most reliable way to

When an attacker passes this specific URI string to a vulnerable web application, they are attempting to read the cloud identity configuration:

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The Mechanism of the Attack: Server-Side Request Forgery (SSRF)

If you need help writing a to block this payload at your gateway.