{"id":"CVE-2026-54286","revision":"8e7a8e2b96e64bad85abff95589f5b41","records":[{"revision":"8e7a8e2b96e64bad85abff95589f5b41","observedAt":"2026-10-25T13:17:28.253+00:00","statement":{"source":"nvd","id":"CVE-2026-54286","aliases":[],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on Windows hosts, an encoded backslash (%5C) in the request path decodes to \\, which the Windows path resolver treats as a separator. se…","description":"Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on Windows hosts, an encoded backslash (%5C) in the request path decodes to \\, which the Windows path resolver treats as a separator. serve-static then resolves a single URL segment such as admin\\secret.txt into a nested file under the root and serves it, letting an attacker read static files meant to be protected behind prefix-mounted middleware. This vulnerability is fixed in 4.12.25.","state":0,"publishedAt":"2026-06-22T18:16:47.213+00:00","modifiedAt":"2026-06-23T15:16:37.24+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/security/advisories/GHSA-wwfh-h76j-fc44"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54286","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-22"],"productCriteria":[],"sourceDates":{"published":"2026-06-22T18:16:47.213","lastModified":"2026-06-23T15:16:37.240"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54286","identifiers":["CVE-2026-54286"]},"retained":false,"historicalAffected":[]}],"coverage":[]}