{"id":"CVE-2026-59895","revision":"f6378d6f5e7f4105911f6e5fbccc9f90","records":[{"revision":"f6378d6f5e7f4105911f6e5fbccc9f90","observedAt":"2026-10-25T14:19:22.811+00:00","statement":{"source":"nvd","id":"CVE-2026-59895","aliases":[],"title":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.0.0 before 4.12.27, cx() in hono/css composes class names from plain strings but marks the result as already escaped without HTML-escaping the inpu…","description":"Hono is a Web application framework that provides support for any JavaScript runtime. From 4.0.0 before 4.12.27, cx() in hono/css composes class names from plain strings but marks the result as already escaped without HTML-escaping the input, allowing untrusted className values used in a JSX class attribute during server-side rendering to break out of the attribute and inject arbitrary markup. This issue is fixed in version 4.12.27.","state":0,"publishedAt":"2026-07-08T17:17:27.353+00:00","modifiedAt":"2026-07-10T19:53:22.957+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/honojs/hono/commit/cd3f6f7194f0e5c9d4b26ae0cf232018d0f388fc","https://github.com/honojs/hono/releases/tag/v4.12.27","https://github.com/honojs/hono/security/advisories/GHSA-w62v-xxxg-mg59"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59895","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-79","CWE-116"],"productCriteria":["cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-07-08T17:17:27.353","lastModified":"2026-07-10T19:53:22.957"},"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-2026-59895","identifiers":["CVE-2026-59895"]},"retained":false,"historicalAffected":[]}],"coverage":[]}