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Advisories

Hono 4.12.4 before 4.13.11 Middleware Bypass via serveStatic Double Decoding

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severity
medium
date
Affecting

  • hono >= 4.12.4, < 4.13.11

CWE
  • CWE-174 Double Decoding of the Same Data
CVSS
6.9
CVSS V4 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
Credit
manop55555
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.

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