CVE-2026-47070 (GCVE-0-2026-47070)

Vulnerability from cvelistv5 – Published: 2026-05-25 14:00 – Updated: 2026-05-27 15:41
VLAI
Title
HTTP/3 redirect handler leaks Authorization and Cookie headers to cross-origin redirect target in hackney
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.
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
EEF
Impacted products
Vendor Product Version
benoitc hackney Affected: 3.1.1 , < 4.0.1 (semver)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
Create a notification for this product.
benoitc hackney Affected: e61b7d04b7826847e1efe614106ef4d580c78eab , < c58d5b50bade146360b85caf3dc8065807b08246 (git)
    cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Peter Ullrich Benoit Chesneau Jonatan Männchen / EEF
Show details on NVD website

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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Detection rules are retrieved from Rulezet.

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