v4.12.12

Security fixes

This release includes fixes for the following security issues:

Middleware bypass via repeated slashes in serveStatic

Affects: Serve Static middleware. Fixes a path normalization inconsistency where repeated slashes (//) could bypass route-based middleware protections and allow access to protected static files. GHSA-wmmm-f939-6g9c

Path traversal in toSSG() allows writing files outside the output directory

Affects: toSSG() for Static Site Generation. Fixes a path traversal issue where crafted ssgParams values could write files outside the configured output directory. GHSA-xf4j-xp2r-rqqx

Incorrect IP matching in ipRestriction() for IPv4-mapped IPv6 addresses

Affects: IP Restriction Middleware. Fixes improper handling of IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1) that could cause allow/deny rules to be bypassed. GHSA-xpcf-pg52-r92g

Missing validation of cookie name on write path in setCookie()

Affects: setCookie(), serialize(), and serializeSigned() from hono/cookie. Fixes missing validation of cookie names on the write path, preventing inconsistent handling between parsing and serialization. GHSA-26pp-8wgv-hjvm

Non-breaking space prefix bypass in cookie name handling in getCookie()

Affects: getCookie() from hono/cookie. Fixes a discrepancy in cookie name handling that could allow attacker-controlled cookies to override legitimate ones and bypass prefix protections. GHSA-r5rp-j6wh-rvv4

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Users who use Serve Static, Static Site Generation, Cookie utilities, or IP restriction middleware are strongly encouraged to upgrade to this version.

v4.12.11

What's Changed

• feat(css): add classNameSlug option to createCssContext by @flow-pie in #4834

New Contributors

• @flow-pie made their first contribution in #4834

Full Changelog: v4.12.10...v4.12.11

v4.12.10

What's Changed

• test(router): fix Simple capturing group test by @yusukebe in #4838
• docs: fix impaired -> inspired typo in benchmark READMEs by @Abhi3975 in #4843
• fix(jsx/dom): apply select value after children are rendered by @usualoma in #4847
• fix(compress): convert strong ETag to weak ETag when compressing by @usualoma in #4848
• docs(ip-restriction): add clear JSDoc examples and param types by @VISHNU7KASIREDDY in #4851

New Contributors

• @Abhi3975 made their first contribution in #4843
• @VISHNU7KASIREDDY made their first contribution in #4851

Full Changelog: v4.12.9...v4.12.10

v4.12.9

What's Changed

• fix(request): remove parseBody from bodyCache to prevent TypeError by @yusukebe in #4807
• feat(client): add PickResponseByStatusCode type by @yusukebe in #4791
• fix(ssg): pass SSG_CONTEXT to forGetInfoURLRequest by @yuintei in #4810
• fix(service-worker): make fire() fallback behavior consistent with handle() by @yusukebe in #4821
• fix(cors): reflect request origin when credentials is true with wildcard by @ctonneslan in #4813

New Contributors

• @yuintei made their first contribution in #4810
• @ctonneslan made their first contribution in #4813

Full Changelog: v4.12.8...v4.12.9

v4.12.8

What's Changed

• fix(utils/mime): Normalize input extension to lowercase before MIME check by @TheEssem in #4800
• fix(bearer-auth): escape regex metacharacters in bearer auth prefix option by @otoneko1102 in #4750

New Contributors

• @TheEssem made their first contribution in #4800

Full Changelog: v4.12.7...v4.12.8

v4.12.7

Security hardening

Ignore __proto__ path segments in parseBody({ dot: true }) to prevent potential prototype pollution when merged with unsafe patterns.

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Full Changelog: v4.12.6...v4.12.7

v4.12.6

What's Changed

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

New Contributors

• @t0waxx made their first contribution in #4782

Full Changelog: v4.12.5...v4.12.6

v4.12.5

What's Changed

• fix(request): return string | undefined from param() when path type is any by @andrewdamelio in #4723
• fix(jwt): validate token format in decode and decodeHeader functions by @otoneko1102 in #4752
• fix(jsx): Fix "Invalid state: Controller is already closed" by @gaearon in #4770
• chore(eslint): upgrade @hono/eslint-config by @BarryThePenguin in #4781

New Contributors

• @andrewdamelio made their first contribution in #4723
• @otoneko1102 made their first contribution in #4752
• @gaearon made their first contribution in #4770

Full Changelog: v4.12.4...v4.12.5

v4.12.4

Security fixes

This release includes fixes for the following security issues:

SSE Control Field Injection

Affects: streamSSE() in Streaming Helper. Fixes injection of unintended SSE fields by rejecting CR/LF characters in event, id, and retry. GHSA-p6xx-57qc-3wxr

Cookie Attribute Injection in setCookie()

Affects: setCookie() from hono/cookie. Fixes cookie attribute manipulation by rejecting ;, \r, and \n in domain and path options. GHSA-5pq2-9x2x-5p6w

Middleware Bypass in Serve Static

Affects: Serve Static middleware. Fixes inconsistent URL decoding that could allow protected static resources to be accessed without triggering route-based middleware. GHSA-q5qw-h33p-qvwr

Users who uses Strreaming Helper, Cookie utility, and Serve Static are strongly encouraged to upgrade to this version.

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Other changes

• fix(client): preserve route schema in ApplyGlobalResponse by @agumy in #4777
• fix(utils/url): specify the return type of tryDecodeURI by @yusukebe in #4779

New Contributors

• @agumy made their first contribution in #4777

Full Changelog: v4.12.3...v4.12.4

v4.12.3

What's Changed

• fix(validator): prevent type diff bug in form data parsing by @EdamAme-x in #4753
• fix(jwt): use Math.floor instead of bitwise OR for safe timestamp by @EdamAme-x in #4754
• fix(jwt): fix JwtVariables for ContextVariableMap by @yusukebe in #4764
• fix(types): remove DOM type dependencies from ClientResponse and request method by @YevheniiKotyrlo in #4768
• fix(types): correct middleware types by @hmnd in #4774
• fix(jwt): prevent memory leak by avoiding mutation of options object by @EdamAme-x in #4759

New Contributors

• @YevheniiKotyrlo made their first contribution in #4768
• @hmnd made their first contribution in #4774

Full Changelog: v4.12.2...v4.12.3