{"id":"CVE-2026-93981","title":"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 roo…","summary":"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 roo…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"vendor":"honojs","product":"hono","affected":["hono < 4.13.7"],"published":"2026-09-19","updated":"2026-09-21","sourceUpdated":"2026-09-21T21:17:20.740","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93981","references":[{"url":"https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-21T16:22:56.367930Z"},"epss":0.00142,"epssPercentile":0.03883,"ingestedAt":"2026-09-19T12:02:33.564Z","slug":"CVE-2026-93981","body":"## Overview\n\nhono 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}