CVE-2026-47070

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Source

https://cve.org/CVERecord?id=CVE-2026-47070

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47070.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-47070

Aliases

Published

2026-05-25T14:00:46Z

Modified

2026-10-28T02:30:51Z

Severity

6.0 (Medium) CVSS_V4 - 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 CVSS Calculator

Summary

HTTP/3 redirect handler leaks Authorization and Cookie headers to cross-origin redirect target in hackney

Details

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.

Database specific

{
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-601"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47070.json"
}

References

Affected packages

Git / github.com/benoitc/hackney

Affected ranges

Type

GIT

Repo

https://github.com/benoitc/hackney

Events

Introduced

84b8c43275921338f053e8212411dcf643d37cb8

Fixed

c41c8d48ace8141b003f6f1de3ca6734a0c53056

Fixed

c58d5b50bade146360b85caf3dc8065807b08246

Database specific

Show details

{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "3.1.1"
                },
                {
                    "fixed": "4.0.1"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "c58d5b50bade146360b85caf3dc8065807b08246"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

3.*

3.1.1

3.1.2

3.2.0

3.2.1

4.*

4.0.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47070.json"