CVE-2026-47675

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \r, \n), but does not apply the same validation to sameSite and priority. An application that passes user-controlled input into either option may produce a Set-Cookie response header containing attacker-chosen additional attributes. This vulnerability is fixed in 4.12.21.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/honojs/hono/security/advisories/GHSA-3hrh-pfw6-9m5x	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

History

14 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Hono es un framework de aplicación web que proporciona soporte para cualquier tiempo de ejecución de JavaScript. Anteriormente a la 4.12.21, la función serialize() en hono/cookie valida las opciones de dominio y ruta contra caracteres que corrompen la sintaxis del encabezado Set-Cookie (;, \r, \n), pero no aplica la misma validación a sameSite y priority. Una aplicación que pasa entrada controlada por el usuario a cualquiera de las opciones puede producir un encabezado de respuesta Set-Cookie que contiene atributos adicionales elegidos por el atacante. Esta vulnerabilidad se corrige en la 4.12.21.

Information

Published : 2026-05-28 17:16

Updated : 2026-10-14 20:10

NVD link : CVE-2026-47675

Mitre link : CVE-2026-47675

CVE.ORG link : CVE-2026-47675

JSON object : View

Products Affected

hono

hono

CWE

CWE-113

Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')

CWE-1287

Improper Validation of Specified Type of Input

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