Medium severity · published Jan 27, 2026
CVE-2026-24771
Hono has a Cross-site Scripting vulnerability
4.7
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HO
hono · honojs
< 4.11.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24771
Patch
https://github.com/honojs/hono/commit/2cf60046d730df9fd0aba85178f3ecfe8212d990
Vendor Advisory
https://github.com/honojs/hono/security/advisories/GHSA-9r54-q6cx-xmh5
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