HTML Injection Affecting hono package, versions <4.12.16


Severity

Recommended
0.0
low
0
10

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  • Snyk IDSNYK-JS-HONO-16438965
  • published7 May 2026
  • disclosed6 May 2026
  • creditSaad FELLAHI

Introduced: 6 May 2026

NewCVE-2026-44455  (opens in a new tab)
CWE-74  (opens in a new tab)

How to fix?

Upgrade hono to version 4.12.16 or higher.

Overview

hono is an Ultrafast web framework for the Edges

Affected versions of this package are vulnerable to HTML Injection via the jsx element tag. An attacker can inject unintended HTML elements or attributes, corrupt the HTML structure, or execute scripts by supplying malicious tag names as input to the rendering process.

Note: This is only exploitable if applications construct JSX tag names from untrusted input; applications using static or allowlisted tag names are not affected.

CVSS Base Scores

version 4.0
version 3.1