CVE-2026-109955
Hono 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-174 |
| Vendor | honojs |
| Product | hono |
| Published | Oct 13, 2026 |
| Last Updated | Oct 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
honojs / hono
4.12.4 < 4.13.11
References
Credits
🔍 manop55555