{"id":"CVE-2026-93981","published":"2026-09-19T12:16:41.080","lastModified":"2026-09-21T21:17:20.740","description":"hono before 4.13.7 fails to HTML-escape plain strings rendered by hono/jsx as a child or fallback of Suspense, as a string child of ErrorBoundary alongside an asynchronous sibling, as the single child of a Context.Provider, or as the root value passed to renderToString() or renderToReadableStream() from hono/jsx/dom/server. These paths stringify their input and treat the result as already-escaped markup, so an attacker who controls such a string during server-side rendering can inject arbitrary HTML and execute script under the application's origin.","cvssScore":4.7,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv","tags":[]},{"url":"https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings","tags":[]}],"exploitRefs":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv","tags":[]}],"hasPoc":true,"ai":null}