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CVE-2026-47675

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · honoNVD modified 2026-10-14 20:10

Affected (CPE criteria) 1

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

References 1