CVE-2026-29045

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3	Patch
https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*

History

06 Mar 2026, 18:06

Type	Values Removed	Values Added
CPE		cpe:2.3:a:hono:hono::::::node.js::*
References	~~() https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3 -~~	() https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3 - Patch
References	~~() https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr -~~	() https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr - Vendor Advisory
First Time		Hono hono Hono

04 Mar 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-04 23:16

Updated : 2026-03-06 18:06

NVD link : CVE-2026-29045

Mitre link : CVE-2026-29045

CVE.ORG link : CVE-2026-29045

JSON object : View

Products Affected

hono

hono

CWE

CWE-177

Improper Handling of URL Encoding (Hex Encoding)

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