GHSA-6623-4q32-82v8

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GHSA-6623-4q32-82v8

Summary: Duplicate Advisory: hono/jsx renders plain strings unescaped in boundary components, leading to XSS

Details: ## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-hxh3-vqpv-xpqv. This link is maintained to preserve external references. ## Original 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.

References: https://github.com/honojs/hono/security/advisories/GHSA-hxh3-vqpv-xpqv, https://nvd.nist.gov/vuln/detail/CVE-2026-93981, https://www.vulncheck.com/advisories/hono-jsx-before-4.13.7-cross-site-scripting-via-unescaped-strings