CVE-2026-47069

5.3 MEDIUM
Published: May 25, 2026 Modified: May 27, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://cna.erlef.org/cves/CVE-2026-47069.html
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Exploit Patch Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-47069
Source: 6b3ad84c-e1a6-4bf7-a703-f496b71e49db
Third Party Advisory Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Patch Vendor Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.4%
27th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

benoitc