Hono has a Cross-site Scripting 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.

Scores

EPSS (exploitation in 30 days)

0.37% · top 69% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.7.

Weakness

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)All about CWE-79 and its CVEs

Affected products

• honojs · hono

  • affected < 4.11.7

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• npmhonoGHSA-9r54-q6cx-xmh5 (opens in a new tab)

References (2)

• https://github.com/honojs/hono/security/advisories/GHSA-9r54-q6cx-xmh5 (opens in a new tab)x_refsource_CONFIRM
• https://github.com/honojs/hono/commit/2cf60046d730df9fd0aba85178f3ecfe8212d990 (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-9r54-q6cx-xmh5 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-24771](https://trackcve.app/badge/CVE-2026-24771.svg)](https://trackcve.app/cve/CVE-2026-24771)

Record last updated 27 Jan 2026, 20:51 UTC.