hono at a glance
- Last 12 months
- 46
- Critical · all time
- 0
- Exploited · all time
- 0
- Public exploit · all time
- 1
Show as table
| Month | Vulnerabilities | Critical |
|---|---|---|
| Nov 2026 | 5 | 0 |
| Oct 2026 | 2 | 0 |
| Sep 2026 | 4 | 0 |
| Aug 2026 | 4 | 0 |
| Jul 2026 | 3 | 0 |
| Jun 2026 | 5 | 0 |
| May 2026 | 9 | 0 |
| Apr 2026 | 4 | 0 |
| Mar 2026 | 3 | 0 |
| Feb 2026 | 1 | 0 |
| Jan 2026 | 6 | 0 |
| Dec 2025 | 0 | 0 |
| Nov 2025 | 0 | 0 |
| Oct 2025 | 1 | 0 |
| Sep 2025 | 2 | 0 |
| Aug 2025 | 0 | 0 |
| Jul 2025 | 0 | 0 |
| Jun 2025 | 0 | 0 |
| May 2025 | 0 | 0 |
| Apr 2025 | 0 | 0 |
| Mar 2025 | 0 | 0 |
| Feb 2025 | 0 | 0 |
| Jan 2025 | 0 | 0 |
| Dec 2024 | 0 | 0 |
53 results · Feed
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Low 3.4
Hono: `css` helper does not escape a closing tag split between the template and an interpolated value, allowing HTML injection
Hono is a Web application framework that provides support for any JavaScript runtime. From 3.12.0 until 4.13.16, the css helper in hono/css escapes interpolated string values separately and therefore fails to neutralize a closing style tag when < ends the …
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Medium 5.3
Hono: RegExpRouter skips wildcard middleware for some route sets and for paths with an encoded line terminator
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.1.4 until 4.13.16, RegExpRouter can omit wildcard middleware in three version-specific cases: since 4.13.0, middleware using the explicit default parameter pattern in…
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Medium 5.3
Hono: `mount()` and `app.mount()` can forward a path that bypasses middleware scoped inside the mount prefix
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.16, mount() and app.mount() can remove a dynamic mount prefix using the route-pattern length rather than the matched-prefix length, allowing a crafted path to …
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Medium 5.3
Hono: `validator('form')` skips validation for `multipart/form-data` requests with extra parameters
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.5.1 until 4.13.16, validator('form') uses a strict whole-header pattern that fails to recognize multipart/form-data when its Content-Type includes another legal param…
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Medium 5.3
Hono: `csrf()` does not check requests sent by hyperlink auditing (`text/ping`)
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.16, csrf() limits origin validation to the content types normally sent by HTML forms and therefore does not validate text/ping requests generated by Chromium h…
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Medium 5.3
Hono: `serveStatic` decodes the request path a second time, leading to bypass of middleware on static paths
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection for a static prefix.…
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Medium 5.3
Hono 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding
Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated attackers to skip prefix middleware by exploiting double path decoding. Attackers can send malformed percent-encoded paths that the router ma…
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Medium 4.7
hono/jsx before 4.13.7 Cross-Site Scripting via Unescaped Strings
hono before 4.13.7 fails to HTML-escape plain strings rendered by hono/jsx as a child or fallback of Suspense, as a string child of ErrorBoundary alongside an asynchronous sibling, as the single child of a Context.Provider, or as the root value passed to rend…
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Medium 6.5
Hono: Incomplete fix for CVE-2026-39408: `toSSG()` still writes files outside the output directory
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.12 until 4.13.5, the fix released for CVE-2026-39408 does not cover every traversal sequence, and toSSG() can still write files outside the configured output direc…
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Medium 5.3
Hono: Unbounded dot-notation nesting in `parseBody()` can cause memory exhaustion
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5, when parseBody() expands dot-separated form field names into nested objects with dot-notation parsing enabled, it does not limit the nesting depth or the to…
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Medium 5.9
Hono: Query parser reads parameters after the URL fragment, causing cache-key and proxy interpretation differentials
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5, Hono's query helpers treat a question mark after a literal hash fragment as the start of a query string, so the application can read request parameters that…
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Medium 5.3
Hono: ReDoS in CORS middleware via Access-Control-Request-Headers
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.34, the built-in CORS middleware, hono/cors, is vulnerable to a regular expression denial of service (ReDoS). During a preflight OPTIONS request, the middlewar…
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Medium 4.8
Hono: `memo()` retains SSR output across requests, leading to cross-user data disclosure
Hono is a Web application framework that provides support for any JavaScript runtime. From 3.8.0 to 4.12.33, memo() from hono/jsx retains the result of a server side render and reuses it for later renders with comparator equal props, and request scoped values…
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Low 3.7
Hono: Proxy Helper does not remove response headers listed in the `Connection` header
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.7.0 to 4.12.33, the Proxy Helper proxy() function in hono/proxy does not remove response headers named by the origin's Connection header. Per RFC 9110 Section 7.6.1, …
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Medium 5.3
Hono: Algorithmic Complexity DoS in Language Middleware
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.0 to 4.12.33, the languageDetector middleware is vulnerable to algorithmic complexity denial of service when processing a crafted language tag containing a large n…
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Medium 6.1
Hono: Server-Side XSS via JSX Escaping Bypass in cx() Utility
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 untrust…
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Medium 6.5
hono/jsx does not isolate context per request, leading to cross-request data disclosure
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.11.8 before 4.12.27, hono/jsx did not isolate context values per request during server-side rendering, allowing createContext, useContext, jsxRenderer, or useRequestC…
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Medium 4.8
Hono: API Gateway v1 adapter can drop a distinct repeated request header value during de-duplication
Hono is a Web application framework that provides support for any JavaScript runtime. From 4.3.3 before 4.12.27, the AWS API Gateway v1 adapter can drop a distinct repeated request header value because it de-duplicates values using a substring comparison inst…
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Medium 6.5
Hono: Body Limit Middleware can be bypassed on AWS Lambda by understating `Content-Length`
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, the Body Limit Middleware trusts the request's Content-Length header to decide whether a body is within the limit. On AWS Lambda (API Gateway v1/v2, ALB, V…
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Medium 4.8
Hono: Lambda@Edge adapter keeps only the last value of a repeated request header, dropping the rest
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda@Edge, CloudFront delivers a request header that appears more than once as several separate entries. The adapter writes each value with Header…
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High 7.1
Hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, with credentials: true and no explicit origin (the default wildcard), the CORS Middleware reflects the request's Origin and sends Access-Control-Allow-Cred…
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Medium 5.9
Hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on Windows hosts, an encoded backslash (%5C) in the request path decodes to \, which the Windows path resolver treats as a separator. serve-static then res…
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Medium 5.3
Hono: AWS Lambda adapter merges multiple `Set-Cookie` headers into one value, dropping cookies on ALB single-header and Lattice
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda, the ALB single-header response and the VPC Lattice v2 response join multiple Set-Cookie headers into one comma-separated value. Because comm…
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Medium 4.8
Hono: JWT middleware accepts any Authorization scheme, not only Bearer
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify that the Authorization header value uses theBearer scheme. Any two-part header value — regardless of the scheme n…
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Medium 5.3
Hono: IP Restriction bypasses static deny rules for non-canonical IPv6
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the ip-restriction middleware (hono/ip-restriction) compares incoming IP addresses against configured deny and allow rules using string equality after part…
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Medium 4.3
Hono: Cookie helper does not sanitize sameSite and priority, allowing Set-Cookie injection
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \r, \n), but does no…
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Medium 5.3
Hono: app.mount() strips mount prefix using undecoded path, causing incorrect routing for percent-encoded paths
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, app.mount() strips the mount prefix from the incoming request path using the raw URL pathname, while route matching is performed against the percent-decode…
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Low 3.8
Hono: Improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, improper validation of the JWT NumericDate claims exp, nbf, and iat in hono/utils/jwt allows tokens with non-spec-compliant claim values to silently bypass…
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Medium 4.3
Hono: CSS Declaration Injection via Style Object Values in JSX SSR
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, the JSX renderer escapes style attribute object values for HTML but not for CSS. Untrusted input in a style object value or property name can therefore inj…
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Medium 5.3
Hono: Cache Middleware ignores Vary: Authorization / Vary: Cookie leading to cross-user cache leakage
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.18, Cache Middleware does not skip caching for responses that declare per-user variance via Vary: Authorization or Vary: Cookie. As a result, a response cached…
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Medium 6.5
Hono: bodyLimit() can be bypassed for chunked / unknown-length requests
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, bodyLimit() does not reliably enforce maxSize for requests without a usable Content-Length (e.g. Transfer-Encoding: chunked). Oversized requests can reach …
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Medium 4.7
Hono: Unvalidated JSX Tag Names in hono/jsx May Allow HTML Injection
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.16, Improper handling of JSX element tag names in hono/jsx allowed unvalidated tag names to be directly inserted into the generated HTML output. When untrusted…
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Medium 4.8
Hono has a non-breaking space prefix bypass in cookie name handling in getCookie()
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a discrepancy between browser cookie parsing and parse() handling allows cookie prefix protections to be bypassed. Cookie names that are treated as distinc…
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Medium 6.3
Hono has incorrect IP matching in ipRestriction() for IPv4-mapped IPv6 addresses
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, ipRestriction() does not canonicalize IPv4-mapped IPv6 client addresses (e.g. ::ffff:127.0.0.1) before applying IPv4 allow or deny rules. In environments s…
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Medium 5.9
Hono has a path traversal in toSSG() allows writing files outside the output directory
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic rout…
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Medium 5.3
Hono has a middleware bypass via repeated slashes in serveStatic
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path handling inconsistency in serveStatic allows protected static files to be accessed by using repeated slashes (//) in the request path. When route-ba…
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Medium 6.5
Hono: SSE Control Field Injection via CR/LF in writeSSE()
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using streamSSE() in Streaming Helper, the event, id, and retry fields were not validated for carriage return (\r) or newline (\n) characters. …
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High 7.5
Hono: Arbitrary file access via serveStatic vulnerability
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected…
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Medium 5.4
Hono: Cookie Attribute Injection via Unsanitized domain and path in setCookie()
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, the setCookie() utility did not validate semicolons (;), carriage returns (\r), or newline characters (\n) in the domain and path options when const…
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High 8.2
Hono is Vulnerable to Authentication Bypass by IP Spoofing in AWS Lambda ALB conninfo
Hono is a Web application framework that provides support for any JavaScript runtime. In versions 4.12.0 and 4.12.1, when using the AWS Lambda adapter (`hono/aws-lambda`) behind an Application Load Balancer (ALB), the `getConnInfo()` function incorrectly sele…