CVE-2026-47069: CRLF injection in cookie domain/path options 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 37% of scored CVEs
DescriptionCVE.org
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in benoitc hackney allows HTTP Response Splitting. The hackney_cookie:setcookie/3 function in src/hackney_cookie.erl validates the Name and Value arguments against CRLF and control characters, but concatenates the domain and path options verbatim into the output iolist with no equivalent check. An attacker who controls either option — for example by supplying a Host header value forwarded as the cookie domain, or a request path forwarded as the cookie path — can inject a literal CRLF sequence and arbitrary additional Set-Cookie headers into the HTTP response. This issue affects hackney: from 0.9.0 before 4.0.1.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- benoitc · hackneyfrom 0.9.0 before 4.0.1
- benoitc · hackneyVersions not stated
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-47069 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.