CVE-2026-47070

Published: Mag 25, 2026 Last Modified: Mag 25, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,0
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: passive
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0004
Percentile
0,1th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

601

URL Redirection to Untrusted Site ('Open Redirect')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Confidentiality Other
Potential Impacts:
Bypass Protection Mechanism Gain Privileges Or Assume Identity Other
Applicable Platforms
Technologies: Web Based, Web Server
Likelihood of Exploit: Low
View CWE Details
https://cna.erlef.org/cves/CVE-2026-47070.html
https://cna.erlef.org/cves/CVE-2026-47070.html
https://github.com/benoitc/hackney/commit/c58d5b50bade14636…
https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08…
https://github.com/benoitc/hackney/security/advisories/GHSA…
https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4
https://osv.dev/vulnerability/EEF-CVE-2026-47070
https://osv.dev/vulnerability/EEF-CVE-2026-47070