Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated attackers to skip prefix middleware by exploiting double path decoding. Attackers can send malformed percent-encoded paths that the router matches in encoded form, reaching static files without authentication checks running.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 13 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 13:45:00 +0000

Type Values Removed Values Added
Description Hono from 4.12.4 before 4.13.11 contains a middleware bypass vulnerability in serveStatic that allows unauthenticated attackers to skip prefix middleware by exploiting double path decoding. Attackers can send malformed percent-encoded paths that the router matches in encoded form, reaching static files without authentication checks running.
Title Hono 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding
First Time appeared Hono
Hono hono
Weaknesses CWE-174
CPEs cpe:2.3:a:hono:hono:*:*:*:*:*:*:*:*
Vendors & Products Hono
Hono hono
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-13T13:51:43.403Z

Reserved: 2026-10-13T11:25:25.214Z

Link: CVE-2026-109955

cve-icon Vulnrichment

Updated: 2026-10-13T13:51:37.890Z

cve-icon NVD

Status : Deferred

Published: 2026-10-13T14:17:34.340

Modified: 2026-10-13T14:17:34.467

Link: CVE-2026-109955

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T15:30:08Z

Weaknesses