Go headerscrub: drops auth headers on cross-origin redirects

Tue, 06 Oct 2026 17:10:43 +0000

Engineer — Learn: Go’s default http.Client forwards all caller-set headers (including API keys and auth tokens) through cross-origin redirects — this library demonstrates the risk pattern and a mitigation worth evaluating for any Go service making outbound HTTP calls with sensitive headers.
SOC/IR — Skip
Leader — Skip

Http-Client on CuraSec