Feed/CVE-2026-59895
CVE-2026-59895MEDIUMCVSS 6.1

CVE-2026-59895

Published Jul 8, 2026·Updated Jul 21, 2026

NVD Description

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.0.0 before 4.12.27, cx() in hono/css composes class names from plain strings but marks the result as already escaped without HTML-escaping the input, allowing untrusted className values used in a JSX class attribute during server-side rendering to break out of the attribute and inject arbitrary markup. This issue is fixed in version 4.12.27.

Affected Packages (1)

honoNPM
From 4.0.0
Fixed in 4.12.27

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

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