CVE-2026-47070

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

6.1 /10

CVSS v3 : MEDIUM

V3 Legend

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 Third Party Advisory Patch
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 Third Party Advisory Patch
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

27 May 2026, 13:55

Type Values Removed Values Added
CPE cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.1
First Time Benoitc
Benoitc hackney
References () https://cna.erlef.org/cves/CVE-2026-47070.html - () https://cna.erlef.org/cves/CVE-2026-47070.html - Third Party Advisory, Patch
References () https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08246 - () https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08246 - Patch
References () https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4 - () https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4 - Exploit, Patch, Vendor Advisory
References () https://osv.dev/vulnerability/EEF-CVE-2026-47070 - () https://osv.dev/vulnerability/EEF-CVE-2026-47070 - Third Party Advisory, Patch

26 May 2026, 17:16

Type Values Removed Values Added
References () https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4 - () https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4 -

25 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-25 15:16

Updated : 2026-05-27 13:55

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')