Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
If you run products in this scope, you should treat this CVE as relevant to your environment.
🟠 Hono, Server-Side XSS via JSX Escaping Bypass, #CVE-2026-59895 (Medium) -DC-Jul2026-879 https://dailycve.com/hono-server-side-xss-via-jsx-escaping-bypass-cve-2026-59895-medium-dc-jul2026-879/
Post summary
The post announces CVE‑2026‑59895, a Server‑Side XSS flaw in Hono discovered by a JSX escaping bypass, but does not provide proof of concept, exploit code, or mitigation details.
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| Part | Vendor | Product | Version | Target SW | Target HW |
|---|---|---|---|---|---|
| App | hono | hono | - | node.js | - |