CVE-2026-47070
6.1 MEDIUMSensitive Data Exposure vulnerability in benoitc hackney allows Retrieve Embedded Sensitive Data
Published: 2026-05-25 · Last updated: 2026-05-27
Severity and scoring
- CVSS
- 6.1 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CWE
- CWE-601
Affected products
| Vendor | Product |
|---|---|
| benoitc | hackney |
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-47070
- [Patch]https://cna.erlef.org/cves/CVE-2026-47070.html
- [Patch]https://github.com/benoitc/hackney/commit/c58d5b50bade146360b85caf3dc8065807b08246
- [Patch]https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4
- [Patch]https://osv.dev/vulnerability/EEF-CVE-2026-47070
- [Patch]https://github.com/benoitc/hackney/security/advisories/GHSA-h73q-4w9q-82h4
Related CVEs
Same vendor
- CVE-2026-47077 — Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding (7.5 HIGH)
- CVE-2026-47076 — Interpretation Conflict vulnerability in benoitc hackney allows Server Side Request Forgery (6.5 MEDIUM)
- CVE-2026-47075 — Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting (7.5 HIGH)
- CVE-2026-47073 — Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding (7.5 HIGH)
- CVE-2026-47072 — Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Request/Response Splitting (7.5 HIGH)
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