GitHub Advisoryadvisory · npm

GHSA-9hp6-4448-45g2 Hono's flaw in URL path parsing could cause path confusion

HIGH Published 2025-09-03 Modified 2025-09-05 Official page ↗
Aliases
CVE-2025-58362
Ecosystem
npm
Packages
hono
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-706
Reviewed
2025-09-03

Affected packages

• npm hono: >= 4.8.0, < 4.9.6 → fixed in 4.9.6

Description

Summary A flaw in the `getPath` utility function could allow path confusion and potential bypass of proxy-level ACLs (e.g. Nginx location blocks). Details The original implementation relied on fixed character offsets when parsing request URLs. Under certain malformed absolute-form Request-URIs, this could lead to incorrect path extraction. Most standards-compliant runtimes and reverse proxies reject such malformed requests with a 400 Bad Request, so the impact depends on the application and environment. Impact If proxy ACLs are used to protect sensitive endpoints such as `/admin`, this flaw could have allowed unauthorized access. The confidentiality impact depends on what data is exposed: if sensitive administrative data is exposed, the impact may be High (CVSS 7.5); otherwise it may be Medium (CVSS 5.3). Resolution The implementation has been updated to correctly locate the first slash after "://", preventing such path confusion.

Related

Alias · CVE (1)

  • CVE-2025-58362 Hono is a Web application framework that provides support for any JavaScript runtime. vulnerability

Weakness · CWE (1)

  • CWE-706 Use of Incorrectly-Resolved Name or Reference weakness

References