5.9
Medium
CVE-2026-54286 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 4.12.25, on Windows hosts, an encoded backslash (%5C) in the request path decodes to \, which the Windows path resolver treats as a separator. serve-static then resolves a single URL segment such as admin\secret.txt into a nested file under the root and serves it, letting an attacker read static files meant to be protected behind prefix-mounted middleware. This vulnerability is fixed in 4.12.25.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| hono 4.12 | earliest → < 4.12.25 | 4.12.25 |
Other CVEs of hono
The 48 CVEs of hono →
CVE-2026-111757
Hono is a Web application framework that provides support for any JavaScript runtime
5.3
Medium
CVE-2026-109955
Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated…
6.9
Medium
CVE-2026-93981
hono before 4.13.7 fails to HTML-escape plain strings rendered by hono/jsx as a child or fallback of Suspense, as a…
2.3
Low
CVE-2026-84365
Hono is a Web application framework that provides support for any JavaScript runtime
6.5
Medium