{"id":"CVE-2026-109955","revision":"7c0b9c85e78a43c1bd5f8bb1e9d0115c","records":[{"revision":"7c0b9c85e78a43c1bd5f8bb1e9d0115c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109955","aliases":[],"title":"Hono 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding","description":"Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated attackers to skip prefix middleware by exploiting double path decoding. Attackers can send malformed percent-encoded paths that the router matches in encoded form, reaching static files without authentication checks running.","state":0,"publishedAt":"2026-10-13T13:27:19.61+00:00","modifiedAt":"2026-10-13T13:51:43.403+00:00","affected":[{"ecosystem":"Vendor product","name":"hono","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"honojs\",\n                    \"product\": \"hono\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/hono\",\n                    \"versions\": [\n                        {\n                            \"version\": \"4.12.4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"4.13.11\"\n                        },\n                        {\n                            \"version\": \"4.13.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 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,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-5r4p-p66f-jhc7","https://www.vulncheck.com/advisories/hono-4.12.4-before-4.13.11-middleware-bypass-via-servestatic-double-decoding"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109955","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109955","identifiers":["CVE-2026-109955"]},"retained":false,"historicalAffected":[]}],"coverage":[]}