# hono (npm) vulnerabilities

Source: https://junglewise.ai/threats/technologies/hono  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 01:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/hono.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 62 vulnerabilities in hono (npm): 5 in the last 7 days and 12 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126359, was published on 13 November 2026. 2 vulnerabilities in the last four weeks, level on the four before (2).

## Counts

- Last 7 days: 5
- Last 30 days: 6
- Last 90 days: 12
- All time: 62 (0 critical, 0 exploited in the wild)

## About hono (npm)

A lightweight web framework for JavaScript that runs on multiple runtimes including Node.js, Cloudflare Workers, and Deno.

## Latest hono (npm) vulnerabilities

- [CVE-2026-126359: Hono: `css` helper does not escape a closing tag split between the template and an interpolated value, allowing HTML…](https://junglewise.ai/threats/cve-2026-126359-hono-css-helper-does-not-escape-a-closing-tag-split-between-the) (low, CVSS 3.4, published 13 Nov 2026)
- [CVE-2026-126358: Hono RegExpRouter middleware bypass via wildcard matching](https://junglewise.ai/threats/cve-2026-126358-hono-regexprouter-skips-wildcard-middleware-for-some-route-sets) (medium, CVSS 5.3, published 13 Nov 2026)
- [CVE-2026-126357: Hono mount() path traversal bypasses middleware scoping](https://junglewise.ai/threats/cve-2026-126357-hono-mount-and-app-mount-can-forward-a-path-that-bypasses) (medium, CVSS 5.3, published 13 Nov 2026)
- [CVE-2026-126356: Hono validator form multipart/form-data parameter bypass](https://junglewise.ai/threats/cve-2026-126356-hono-validator-form-skips-validation-for-multipart-form-data) (medium, CVSS 5.3, published 13 Nov 2026)
- [CVE-2026-126355: Hono csrf() middleware bypass via hyperlink auditing](https://junglewise.ai/threats/cve-2026-126355-hono-csrf-does-not-check-requests-sent-by-hyperlink-auditing) (medium, CVSS 5.3, published 13 Nov 2026)
- [CVE-2026-111757: Hono serveStatic authorization bypass via double percent-decoding](https://junglewise.ai/threats/cve-2026-111757-hono-is-a-web-application-framework-that-provides-support-for) (medium, CVSS 5.3, published 19 Oct 2026)
- [CVE-2026-109955: Hono serveStatic middleware bypass via double decoding](https://junglewise.ai/threats/cve-2026-109955-hono-from-4-12-4-before-4-13-11-contains-a-middleware-bypass) (medium, CVSS 5.3, published 13 Oct 2026)
- [hono/jsx unescaped string rendering in boundary components XSS](https://junglewise.ai/threats/duplicate-advisory-hono-jsx-renders-plain-strings-unescaped-in-boundary-4e550189) (medium, CVSS 4.7, published 19 Sep 2026)
- [CVE-2026-93981: Hono JSX cross-site scripting in unescaped string rendering](https://junglewise.ai/threats/cve-2026-93981-hono-before-4-13-7-fails-to-html-escape-plain-strings-rendered-by) (medium, CVSS 4.7, published 19 Sep 2026)
- [CVE-2026-84365: Hono toSSG path traversal with consecutive parent-directory segments](https://junglewise.ai/threats/cve-2026-84365-hono-tossg-path-traversal-with-consecutive-parent-directory) (medium, CVSS 6.5, published 1 Sep 2026)
- [CVE-2026-84364: Hono parseBody memory exhaustion with unbounded dot-notation nesting](https://junglewise.ai/threats/cve-2026-84364-hono-parsebody-memory-exhaustion-with-unbounded-dot-notation) (medium, CVSS 5.3, published 1 Sep 2026)
- [CVE-2026-84363: Hono query parser fragment interpretation differential](https://junglewise.ai/threats/cve-2026-84363-hono-query-parser-fragment-interpretation-differential) (medium, CVSS 5.9, published 1 Sep 2026)
- [CVE-2026-69207: Hono ReDoS in CORS middleware via Access-Control-Request-Headers](https://junglewise.ai/threats/cve-2026-69207-hono-redos-in-cors-middleware-via-access-control-request-headers) (medium, CVSS 5.3, published 7 Aug 2026)
- [CVE-2026-71850: Hono hono/jsx cross-user data disclosure in memo function](https://junglewise.ai/threats/cve-2026-71850-hono-hono-jsx-cross-user-data-disclosure-in-memo-function) (medium, CVSS 4.8, published 7 Aug 2026)
- [CVE-2026-71849: Hono Proxy Helper information disclosure via hop-by-hop headers](https://junglewise.ai/threats/cve-2026-71849-hono-proxy-helper-information-disclosure-via-hop-by-hop-headers) (low, CVSS 3.7, published 7 Aug 2026)
- [CVE-2026-71848: Hono languageDetector algorithmic complexity DoS](https://junglewise.ai/threats/cve-2026-71848-hono-languagedetector-algorithmic-complexity-dos) (medium, CVSS 5.3, published 7 Aug 2026)
- [CVE-2026-56764: Hono timing attack in basicAuth and bearerAuth middlewares](https://junglewise.ai/threats/cve-2026-56764-hono-timing-attack-in-basicauth-and-bearerauth-middlewares) (low, CVSS 3.7, published 15 Jul 2026)
- [Duplicate Advisory: Hono vulnerable to Prototype Pollution possible through __proto__ key allowed in parseBody({ dot: true })](https://junglewise.ai/threats/duplicate-advisory-hono-vulnerable-to-prototype-pollution-possible-18a2fd74) (medium, CVSS 4.8, published 11 Jul 2026)
- [CVE-2026-56763: Hono prototype pollution in parseBody with dot option enabled](https://junglewise.ai/threats/cve-2026-56763-hono-prototype-pollution-in-parsebody-with-dot-option-enabled) (medium, CVSS 4.8, published 11 Jul 2026)
- [CVE-2026-59897: Hono incorrect header de-duplication in AWS API Gateway adapter](https://junglewise.ai/threats/cve-2026-59897-hono-incorrect-header-de-duplication-in-aws-api-gateway-adapter) (medium, CVSS 4.8, published 8 Jul 2026)
- [CVE-2026-59896: Hono race condition in JSX server-side rendering context isolation](https://junglewise.ai/threats/cve-2026-59896-hono-race-condition-in-jsx-server-side-rendering-context) (medium, CVSS 6.5, published 8 Jul 2026)
- [CVE-2026-59895: Hono XSS in hono/css cx() utility](https://junglewise.ai/threats/cve-2026-59895-hono-xss-in-hono-css-cx-utility) (medium, CVSS 6.1, published 8 Jul 2026)
- [Duplicate Advisory: Hono vulnerable to Vary Header Injection leading to potential CORS Bypass](https://junglewise.ai/threats/duplicate-advisory-hono-vulnerable-to-vary-header-injection-leading-to-5d1c74c3) (medium, CVSS 6.5, published 1 Jul 2026)
- [CVE-2025-71381: Hono CORS middleware Vary header injection](https://junglewise.ai/threats/cve-2025-71381-hono-cors-middleware-vary-header-injection) (medium, CVSS 6.5, published 30 Jun 2026)
- [CVE-2026-56761: Hono HTML injection in JSX server-side rendering](https://junglewise.ai/threats/cve-2026-56761-hono-html-injection-in-jsx-server-side-rendering) (medium, CVSS 4.3, published 24 Jun 2026)

## Most severe hono (npm) vulnerabilities

- [CVE-2025-62610: Hono JWT audience validation missing in middleware](https://junglewise.ai/threats/cve-2025-62610-hono-jwt-audience-validation-missing-in-middleware) (high, CVSS 8.1, published 22 Oct 2025)
- [CVE-2026-39408: Hono path traversal in toSSG during static site generation](https://junglewise.ai/threats/cve-2026-39408-hono-path-traversal-in-tossg-during-static-site-generation) (high, CVSS 7.5, published 8 Apr 2026)
- [CVE-2026-54290: Hono permissive CORS policy in CORS Middleware](https://junglewise.ai/threats/cve-2026-54290-hono-permissive-cors-policy-in-cors-middleware) (high, CVSS 7.1, published 22 Jun 2026)
- [CVE-2026-84365: Hono toSSG path traversal with consecutive parent-directory segments](https://junglewise.ai/threats/cve-2026-84365-hono-tossg-path-traversal-with-consecutive-parent-directory) (medium, CVSS 6.5, published 1 Sep 2026)
- [CVE-2026-59896: Hono race condition in JSX server-side rendering context isolation](https://junglewise.ai/threats/cve-2026-59896-hono-race-condition-in-jsx-server-side-rendering-context) (medium, CVSS 6.5, published 8 Jul 2026)
- [CVE-2025-71381: Hono CORS middleware Vary header injection](https://junglewise.ai/threats/cve-2025-71381-hono-cors-middleware-vary-header-injection) (medium, CVSS 6.5, published 30 Jun 2026)
- [CVE-2026-44456: Hono bodyLimit bypass for chunked requests](https://junglewise.ai/threats/cve-2026-44456-hono-bodylimit-bypass-for-chunked-requests) (medium, CVSS 6.5, published 13 May 2026)
- [CVE-2026-54288: Hono Body Limit Middleware bypass on AWS Lambda](https://junglewise.ai/threats/cve-2026-54288-hono-body-limit-middleware-bypass-on-aws-lambda) (medium, CVSS 6.5, published 22 Jun 2026)
- [Duplicate Advisory: Hono vulnerable to Vary Header Injection leading to potential CORS Bypass](https://junglewise.ai/threats/duplicate-advisory-hono-vulnerable-to-vary-header-injection-leading-to-5d1c74c3) (medium, CVSS 6.5, published 1 Jul 2026)
- [CVE-2026-59895: Hono XSS in hono/css cx() utility](https://junglewise.ai/threats/cve-2026-59895-hono-xss-in-hono-css-cx-utility) (medium, CVSS 6.1, published 8 Jul 2026)

## Vulnerabilities per week

2 vulnerabilities in the last four weeks, level on the four before (2).

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 3 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 2 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 1 | 0 | 0 |
| 19 Oct 2026 | 1 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 5 | 0 | 0 |

## Other npm technologies

- [openclaw (npm)](https://junglewise.ai/threats/technologies/npm-openclaw): 214 vulnerabilities
- [flowise (npm)](https://junglewise.ai/threats/technologies/flowise): 133 vulnerabilities
- [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server): 117 vulnerabilities
- [vm2 (npm)](https://junglewise.ai/threats/technologies/vm2): 111 vulnerabilities
- [electron (npm)](https://junglewise.ai/threats/technologies/electron): 77 vulnerabilities
- [ghost (npm)](https://junglewise.ai/threats/technologies/ghost): 74 vulnerabilities
- [n8n (npm)](https://junglewise.ai/threats/technologies/npm-n8n): 64 vulnerabilities
- [directus (npm)](https://junglewise.ai/threats/technologies/directus): 61 vulnerabilities
- [nocodb (npm)](https://junglewise.ai/threats/technologies/nocodb): 54 vulnerabilities
- [undici (npm)](https://junglewise.ai/threats/technologies/undici): 53 vulnerabilities
- [@budibase/server (npm)](https://junglewise.ai/threats/technologies/budibase-server): 42 vulnerabilities
- [apostrophe (npm)](https://junglewise.ai/threats/technologies/apostrophe): 36 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "hono (npm) vulnerabilities", https://junglewise.ai/threats/technologies/hono, 13 November 2026.