CVE-2026-93981
hono/jsx before 4.13.7 Cross-Site Scripting via Unescaped Strings
- State
- Published
- Severity
- 2.3 Low
- Published
- Sep 19, 2026
- Updated
- Sep 21, 2026
- Reserved
- Sep 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.3 Low | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 4.7 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
honohonojs |
|
References
- GitHub Security Advisory (GHSA-hxh3-vqpv-xpqv)vendor-advisory
- VulnCheck Advisory: hono/jsx before 4.13.7 Cross-Site Scripting via Unescaped Stringsthird-party-advisory
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