CVE-2026-47069

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-47069
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.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://cna.erlef.org/cves/CVE-2026-47069.html Third Party Advisory Patch
https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540 Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 Exploit Patch Vendor Advisory
https://osv.dev/vulnerability/EEF-CVE-2026-47069 Third Party Advisory Patch
https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 Exploit Patch Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
History

27 May 2026, 13:53

Type Values Removed Values Added
References () https://cna.erlef.org/cves/CVE-2026-47069.html - () https://cna.erlef.org/cves/CVE-2026-47069.html - Third Party Advisory, Patch
References () https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540 - () https://github.com/benoitc/hackney/commit/8e02b99c28aea1b3fa2ddc0e66f51fe5bb0ac540 - Patch
References () https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 - () https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 - Exploit, Patch, Vendor Advisory
References () https://osv.dev/vulnerability/EEF-CVE-2026-47069 - () https://osv.dev/vulnerability/EEF-CVE-2026-47069 - Third Party Advisory, Patch
First Time Benoitc
Benoitc hackney
CPE cpe:2.3:a:benoitc:hackney:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.3

26 May 2026, 17:16

Type Values Removed Values Added
References () https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 - () https://github.com/benoitc/hackney/security/advisories/GHSA-mp55-p8c9-rfw2 -

25 May 2026, 15:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-05-25 15:16

Updated : 2026-05-27 13:53

NVD link : CVE-2026-47069

Mitre link : CVE-2026-47069

CVE.ORG link : CVE-2026-47069

JSON object : View

Products Affected

benoitc

  • hackney
CWE
CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')