Webhook-url-http-3a-2f-2f169.254.169.254-2fmetadata-2fidentity-2foauth2-2ftoken — 2021

# Dangerous: Do not do this. # requests.get(user_provided_webhook_url)

An attacker is probing you for the cloud equivalent of the nuclear launch codes.

This URL you’ve shared is a classic indicator of a attack pattern, specifically targeting cloud metadata services. # Dangerous: Do not do this

: Using this method enhances security by not requiring you to store or manage credentials within your VMs. Instead, the VM requests a token on startup or as needed, offering a more secure and scalable approach.

The URL you've shared appears to be related to a webhook or an HTTP endpoint used for obtaining an OAuth2 token, specifically within a cloud or virtual machine environment, given the IP address 169.254.169.254 . This IP address is commonly used for metadata services in cloud environments, particularly on platforms like AWS EC2. : Using this method enhances security by not

METADATA_IP = ip_address('169.254.169.254') if ip_address(parsed_url.hostname) == METADATA_IP: raise ValueError("Blocked SSRF attempt to metadata service")

The string you saw ( webhook-url-http-3A-2F-2F169.254... ) is not a bug. It is a . An attacker is scanning the internet, looking for the one developer who forgot to validate their input. This IP address is commonly used for metadata

If you are seeing this URL in a "webhook" context, it usually indicates one of two things: a legitimate integration for cloud identity or a vulnerability being tested. 🛠️ Legitimate Use Cases