PT-2025-36613 · Npm · Hono

Published 2025-09-03 · Updated 2025-09-03

OSV

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Fix

Weakness Enumeration

CWE-706

Related Identifiers

GHSA-9HP6-4448-45G2

Affected Products

Hono

References · 6

• https://osv.dev/vulnerability/GHSA-9hp6-4448-45g2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-58362 · Security Note
• https://github.com/honojs/hono · Note
• https://github.com/honojs/hono/security/advisories/GHSA-9hp6-4448-45g2 · Note
• https://github.com/honojs/hono/commit/1d79aedc3f82d8c9969b115fe61bc4bd705ec8de · Note
• https://github.com/honojs/hono/releases/tag/v4.9.6 · Note