# honojs/hono · RepoSense Release & Migration Intelligence

> Patches cookie security prefixes, JSX escaping, and response body leaks. Upgrade package. Migration: None.

## Metadata
- **Repository URL**: https://github.com/honojs/hono
- **Primary Package**: `hono` (NPM)
- **Categories**: `FRAMEWORK`, `BACKEND`, `RUNTIME`
- **Latest Version**: `v4.13.17`
- **Semantic Status**: `COMPATIBLE`
- **Bundle Size Impact (unavailable)**: `Size Unavailable`
- **Atom Ingestion Feed**: https://github.com/honojs/hono/releases.atom

## The Human Context (Plain-English Pitch)
Hono is a lightweight, ultrafast web framework built on modern Web Standards that runs across any JavaScript runtime, including Cloudflare Workers, Bun, Deno, and Node.js. It solves serverless and edge development friction by providing an intuitive, Express-like routing and middleware API without heavy runtime dependencies. Developers use Hono to build performant APIs and full-stack web applications that deploy anywhere without vendor lock-in.

## Stage 1 Executive Summary ([Core Change] + [Required Action] + [Migration Effort])
Patches cookie security prefixes, JSX escaping, and response body leaks. Upgrade package. Migration: None.

## Breaking Changes & Required Actions
- Normalizes cookie validation to match `__Secure-` and `__Host-` prefixes case-insensitively across middleware and `CookieConstraint`.
- Hardens `hono/jsx` by adding CSP nonce support to `ErrorBoundary` inline scripts, escaping element attributes, and suppressing `ref` objects from DOM attributes.
- Cancels unread response bodies in `etag` and `pretty-json` middleware to avoid unconsumed stream leaks.
- Maintains independent return type inference across handler pipelines in `createFactory`.

## Migration Snippet
```ts
npm install hono@4.13.17
```

## Ecosystem Compatibility Matrix & Graph Warnings
- **Node.js >=18** [`COMPATIBLE`]: Standard Web Fetch API support remains fully backward-compatible across Node runtimes.
- **Bun >=1.0** [`COMPATIBLE`]: Maintains full compatibility with Bun native request and response primitives.
- **Cloudflare Workers** [`COMPATIBLE`]: Fully compliant with standard V8 edge worker environments.
- **TypeScript >=5.0** [`COMPATIBLE`]: Preserves independent return type inference across chained factory handlers.

## Zero-Noise Release Timeline
- **v4.13.17** (2026-11-07) [COMPATIBLE]: Patches cookie security prefixes, JSX escaping, and response body leaks. Upgrade package. Migration: None.
- **v4.13.16** (2026-11-01) [SECURITY_PATCH]: Ships `hono@4.13.16` with upstream runtime refinements and. Upgrade immediately to patch advisory. Migration: Low.

## Upgrade & Migration Q&A (GEO Direct Answers)
### Is honojs/hono v4.13.17 safe to upgrade in production?
honojs/hono v4.13.17 is classified as COMPATIBLE (PATCH release). Patches cookie security prefixes, JSX escaping, and response body leaks. Upgrade package. Migration: None.

### What breaking changes or compatibility risks exist in honojs/hono v4.13.17?
No breaking API changes or peer dependency conflicts are recorded for honojs/hono v4.13.17 in the RepoSense compatibility graph.

### What is the bundle size impact of hono v4.13.17?
Measured bundle size telemetry is currently unavailable for hono v4.13.17; verify build output locally before deploying.

### How do I upgrade hono to v4.13.17?
Upgrade hono to v4.13.17 by running "npm install hono@4.13.17" and applying the migration steps: npm install hono@4.13.17