{"id":"CVE-2026-111757","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-111757","generatedAt":"2026-10-28T01:12:25.987Z","title":"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.","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.","published":"2026-10-19T18:17:00.000Z","lastModified":"2026-10-20T17:17:29.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-174"],"affected":[],"epss":{"score":0.0031,"percentile":0.2364,"date":"2026-10-26","history":[{"date":"2026-10-20","score":0.00223,"percentile":0.1208}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-19T18:17:00.000Z","detail":{"score":"5.3","severity":"MEDIUM","publishedAt":"2026-10-19T18:17:00.407Z"},"summary":"New CVE, medium severity (CVSS 5.3)."}],"references":[{"url":"https://github.com/honojs/hono/commit/8b05c774ef1555c70f5ba5e2991b7e77cc3635cc","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","source":"security-advisories@github.com"},{"url":"https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-111757","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}