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CVE-2026-24771— Hono has a Cross-site Scripting vulnerability

Quick assessment

Affected
honojs hono
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.11.7之前版本存在跨站脚本漏洞，该漏洞源于ErrorBoundary组件存在跨站脚本，可能导致执行任意脚本。

CVSS 4.7 · Medium EPSS 0.35% · P26
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I. Basic Information for CVE-2026-24771

Vulnerability Information
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Vulnerability Title
Hono has a Cross-site Scripting vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.11.7, a Cross-Site Scripting (XSS) vulnerability exists in the `ErrorBoundary` component of the hono/jsx library. Under certain usage patterns, untrusted user-controlled strings may be rendered as raw HTML, allowing arbitrary script execution in the victim's browser. Version 4.11.7 patches the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Hono 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.11.7之前版本存在跨站脚本漏洞，该漏洞源于ErrorBoundary组件存在跨站脚本，可能导致执行任意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
honojs hono < 4.11.7 -

II. Public POCs for CVE-2026-24771

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III. Intelligence Information for CVE-2026-24771

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Same Patch Batch · honojs · 2026-01-27 · 4 CVEs total

CVE-2026-24472 5.3 MEDIUM Hono cache middleware ignores "Cache-Control: private" leading to Web Cache Deception
CVE-2026-24398 4.8 MEDIUM Hono's IPv4 address validation bypass in IP Restriction Middleware allows IP spoofing
CVE-2026-24473 Hono has an Arbitrary Key Read in Serve static Middleware (Cloudflare Workers Adapter)

IV. Related Vulnerabilities

Same product: hono
Same vendor: honojs
Same weakness: CWE-79

V. Comments for CVE-2026-24771

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