4.3
Medium
CVE-2026-47675 Hono is a Web application framework that provides support for any JavaScript runtime
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| hono 4.12 | earliest → < 4.12.21 | 4.12.21 |
Other CVEs of hono
The 48 CVEs of hono →
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CVE-2026-93981
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CVE-2026-84365
Hono is a Web application framework that provides support for any JavaScript runtime
6.5
Medium