CVE-2026-47075: CR/LF injection in query parameter in hackney
benoitc · hackney
Fixed in 4.0.1 · Affected: benoitc hackney before 4.0.1 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 41% of scored CVEs
DescriptionCVE.org
Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\r) or line feed (\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request. This issue affects hackney: from 0.13.1 before 4.0.1.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- benoitc · hackneyfrom 0.13.1 before 4.0.1
- benoitc · hackneyVersions not stated
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-47075 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.