PT-2026-111550

CVE-2026-109955

Published

2026-10-13

Updated

2026-10-20

Description by

CVSS 4.0

6.9

Medium

MetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions Hono versions 4.12.4 through 4.13.10

Description A middleware bypass exists in the serveStatic function. Unauthenticated attackers can bypass prefix middleware by using double path decoding, sending malformed percent-encoded paths that the router matches in encoded form. This allows unauthorized access to static files by skipping authentication checks.

Recommendations Update Hono to version 4.13.11 or later.

Exploitability

Exploit

Fix

Researchers

Manop55555

Vendors

Affected products

Weakness enumeration

CWE-174: Double Decoding of the Same Data

Related identifiers

CVE-2026-109955