CVE-2026-47070

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-47070.html	Patch Third Party Advisory
https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08246	Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4	Exploit Patch Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-47070	Patch Third Party Advisory
https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4	Exploit Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-25 15:16

Updated : 2026-07-24 10:10

NVD link : CVE-2026-47070

Mitre link : CVE-2026-47070

CVE.ORG link : CVE-2026-47070

JSON object : View

Products Affected

benoitc

hackney

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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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.\n\nThe 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.\n\nThis issue affects hackney: from 3.1.1 before 4.0.1."}, {"lang": "es", "value": "Vulnerabilidad de Exposici\u00f3n de Datos Sensibles en benoitc hackney permite Recuperar Datos Sensibles Incrustados. El gestor de redirecci\u00f3n HTTP/3 en src/hackney_h3.erl pasa las cabeceras de la solicitud original sin cambios al objetivo de redirecci\u00f3n sin realizar ninguna comprobaci\u00f3n de origen cruzado. Cuando un cliente emite una solicitud HTTP/3 con follow_redirect habilitado e incluye cabeceras de Autorizaci\u00f3n o Cookie, un servidor que responde con una redirecci\u00f3n 3xx a un host diferente har\u00e1 que el cliente reenv\u00ede esas credenciales textualmente al nuevo origen.\n\nEl m\u00f3dulo principal hackney.erl tiene maybe_strip_auth_on_redirect/2 (protegido por la opci\u00f3n location_trusted) para abordar CVE-2018-1000007, pero hackney_h3.erl carece completamente de esta protecci\u00f3n.\n\nEste problema afecta a hackney: desde 3.1.1 antes de 4.0.1."}], "lastModified": "2026-07-24T10:10:00.197", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8C414FFB-6D14-4614-BD00-0AB5C3ECE4F9", "versionEndExcluding": "4.0.1", "versionStartIncluding": "3.1.1"}], "operator": "OR"}]}], "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}