cvedb.io
CVE-2026-47070
MEDIUM · CVSS 6.1
EPSS exploitation probability: 0%
Published 2026-05-25T15:16:22.010 · Last modified 2026-06-17T10:54:17.670

Summary

Sensitive Data Exposure vulnerability in benoitc hackney allows Retrieve Embedded Sensitive Data. The HTTP/3 redirect handler in src/hackney_h3.erl passes the original request headers unchanged to the redirect target without performing any cross-origin check. When a client issues an HTTP/3 request with follow_redirect enabled and includes Authorization or Cookie headers, a server responding with a 3xx redirect to a different host will cause the client to forward those credentials verbatim to the new origin. The main hackney.erl module has maybe_strip_auth_on_redirect/2 (guarded by the location_trusted option) to address CVE-2018-1000007, but hackney_h3.erl is missing this protection entirely. This issue affects hackney: from 3.1.1 before 4.0.1.

Affected products

benoitc — hackney

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.