Vulnerability · Published Jan 27, 2026 · Assigned by GitHub_M

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

Medium 4.7

In plain English

A medium-severity cross-site scripting in hono from honojs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.7Medium

Exploit odds (30 days)0.4%top 68.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	hono	4.11.7	GHSA-9r54-q6cx-xmh5

Affected products (as reported)

Vendor	Product	Versions
honojs	hono	< 4.11.7

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

References

https://github.com/honojs/hono/security/advisories/GHSA-9r54-q6cx-xmh5 x_refsource_CONFIRM
https://github.com/honojs/hono/commit/2cf60046d730df9fd0aba85178f3ecfe8212d990 x_refsource_MISC