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Cloud Instance Metadata Services — Clarity Today

Topic

Cloud Instance Metadata Services

The link-local HTTP endpoints, reachable at 169.254.169.254 on the major clouds, that virtual machines query for their own configuration and for short-lived role credentials.

Current clusters

build1 distinct publisher

IMDSv1 turns an SSRF finding into unauthenticated credential theft in one hop

F5 Labs logged 69,433 probes at 169.254.169.254 in March 2025 using six ordinary parameter names. Whether any of them mattered was settled at instance launch, before any input validation ever ran.

Publishers:dev.to

Reality

Evidence58
Adoption32
Hype gap+22
Incentives42

Confidence47