cvedb.io
CVE-2026-47069
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-05-25T15:16:21.870 · Last modified 2026-06-17T10:54:17.533

Summary

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 products

benoitc — hackney

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.