🛡️ CVE-2026-47070
⚪ Unknown ✅ No Known Exploit CWE-601 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE CWE-601
Public Exploit ✅ No
Source NVD
Published 2026-05-25
Updated 2026-06-15
Modified 2026-05-27

Affected Packages

Software From version Fixed in
hackney — —
unknown — —

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