{"cve":"CVE-2026-111757","nvd":{"published":"2026-10-19T18:17:00.407","modified":"2026-10-20T17:17:29.443","status":"Deferred","description":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection for a static prefix. The root cause is serveStatic decodes a routed request path a second time before filesystem lookup. The attack mechanism is malformed percent encoding survives the first routing interpretation and becomes a protected path only during the later static-file decode. The affected component is serveStatic. The trigger conditions are an application protects a static prefix with upstream middleware and serveStatic receives an attacker-controlled malformed percent-encoded path. The impact is unauthorized disclosure of a static file that upstream middleware was intended to protect. The issue does not permit traversal outside the configured static root. This issue is fixed in version 4.13.11.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-174"],"references":["https://github.com/honojs/hono/commit/8b05c774ef1555c70f5ba5e2991b7e77cc3635cc","https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-111757","score":0.0031,"percentile":0.23621,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-5r4p-p66f-jhc7","url":"https://osv.dev/vulnerability/GHSA-5r4p-p66f-jhc7","summary":"Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths","modified":"2026-10-20T14:45:03.780823695Z","packages":[{"ecosystem":"npm","name":"hono","purl":"pkg:npm/hono","ranges":[">=4.12.4 <4.13.11"],"fixed":["4.13.11"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}