CVE-2026-59895

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.

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Produits concernés

• honojs hono
• Hono hono

Scores CVSS

Faiblesses (CWE)

• CWE-79
• CWE-116

Références

• https://github.com/honojs/hono/commit/cd3f6f7194f0e5c9d4b26ae0cf232018d0f388fc Patch
• https://github.com/honojs/hono/releases/tag/v4.12.27 Release Notes
• https://github.com/honojs/hono/security/advisories/GHSA-w62v-xxxg-mg59 Vendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories