{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-47070", "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "state": "PUBLISHED", "assignerShortName": "EEF", "dateReserved": "2026-05-18T17:28:08.322Z", "datePublished": "2026-05-25T14:00:46.420Z", "dateUpdated": "2026-05-25T14:00:46.420Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.hex.pm", "cpes": ["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["hackney_h3"], "packageName": "hackney", "packageURL": "pkg:hex/hackney", "product": "hackney", "programFiles": ["src/hackney_h3.erl"], "programRoutines": [{"name": "hackney_h3:handle_redirect/11"}, {"name": "hackney_h3:do_request_with_redirect/8"}], "repo": "https://github.com/benoitc/hackney", "vendor": "benoitc", "versions": [{"lessThan": "4.0.1", "status": "affected", "version": "3.1.1", "versionType": "semver"}]}, {"collectionURL": "https://github.com", "cpes": ["cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "modules": ["hackney_h3"], "packageName": "benoitc/hackney", "packageURL": "pkg:github/benoitc/hackney", "product": "hackney", "programFiles": ["src/hackney_h3.erl"], "programRoutines": [{"name": "hackney_h3:handle_redirect/11"}, {"name": "hackney_h3:do_request_with_redirect/8"}], "repo": "https://github.com/benoitc/hackney", "vendor": "benoitc", "versions": [{"lessThan": "c58d5b50bade146360b85caf3dc8065807b08246", "status": "affected", "version": "e61b7d04b7826847e1efe614106ef4d580c78eab", "versionType": "git"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.0.1", "versionStartIncluding": "3.1.1", "vulnerable": true}], "negate": false, "operator": "AND"}], "operator": "AND"}], "credits": [{"lang": "en", "type": "finder", "value": "Peter Ullrich"}, {"lang": "en", "type": "remediation developer", "value": "Benoit Chesneau"}, {"lang": "en", "type": "analyst", "value": "Jonatan M\u00e4nnchen"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Sensitive Data Exposure vulnerability in benoitc hackney allows Retrieve Embedded Sensitive Data.<p>The HTTP/3 redirect handler in <tt>src/hackney_h3.erl</tt> 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 <tt>follow_redirect</tt> enabled and includes <tt>Authorization</tt> or <tt>Cookie</tt> headers, a server responding with a <tt>3xx</tt> redirect to a different host will cause the client to forward those credentials verbatim to the new origin.</p><p>The main <tt>hackney.erl</tt> module has <tt>maybe_strip_auth_on_redirect/2</tt> (guarded by the <tt>location_trusted</tt> option) to address CVE-2018-1000007, but <tt>hackney_h3.erl</tt> is missing this protection entirely.</p><p>This issue affects hackney: from 3.1.1 before 4.0.1.</p>"}], "value": "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.\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."}], "impacts": [{"capecId": "CAPEC-37", "descriptions": [{"lang": "en", "value": "CAPEC-37 Retrieve Embedded Sensitive Data"}]}], "metrics": [{"cvssV4_0": {"attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 6, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "PASSIVE", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "description": "CWE-601 URL Redirection to Untrusted Site ('Open Redirect')", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db", "shortName": "EEF", "dateUpdated": "2026-05-25T14:00:46.420Z"}, "references": [{"tags": ["vendor-advisory", "related"], "url": "https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4"}, {"tags": ["related"], "url": "https://cna.erlef.org/cves/CVE-2026-47070.html"}, {"tags": ["related"], "url": "https://osv.dev/vulnerability/EEF-CVE-2026-47070"}, {"tags": ["patch"], "url": "https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08246"}], "source": {"discovery": "EXTERNAL"}, "title": "HTTP/3 redirect handler leaks Authorization and Cookie headers to cross-origin redirect target in hackney", "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{}

{}

{}