v4.12.6

honojs/honov4.12.6Mar 10, 2026by yusukebe

AI Summary

This release includes multiple fixes including ReDoS mitigation for accept header parsing, JSX improvements to align with React 19, build configuration enhancements, and lambda-edge support. It also adds function-based options for JSX renderer.

Key Highlights

Fixed accept header regex split to mitigate ReDoS vulnerability
Fixed JSX link hoisting and dedupe to align with React 19
Added tsconfig project references for build improvements
Added tsconfig.spec.json
Fixed lambda-edge to avoid callback handler deprecation on NODEJS_24_X

New Features

Function-based options support for jsx-renderer

Full Release Notes

## What's Changed
* fix(accept): replace regex split to mitigate ReDoS by @EdamAme-x in https://github.com/honojs/hono/pull/4758
* fix(jsx): align link hoisting and dedupe with React 19 by @usualoma in https://github.com/honojs/hono/pull/4792
* chore(builld): tsconfig project references by @BarryThePenguin in https://github.com/honojs/hono/pull/4797
* chore: add `tsconfig.spec.json` by @yusukebe in https://github.com/honojs/hono/pull/4798
* feat(jsx-renderer): support function-based options by @3w36zj6 in https://github.com/honojs/hono/pull/4780
* fix(lambda-edge): avoid callback handler deprecation on NODEJS_24_X by @t0waxx in https://github.com/honojs/hono/pull/4782

## New Contributors
* @t0waxx made their first contribution in https://github.com/honojs/hono/pull/4782

**Full Changelog**: https://github.com/honojs/hono/compare/v4.12.5...v4.12.6