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Echo: hono: security update to 4.13.5

medium Tenable Self-Hosted Container Security Plugin ID 463131

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.13.5,
 Hono's query helpers treat a question mark after a literal hash fragment as the start of a query string,
 so the application can read request parameters that browsers, new URL(), reverse proxies, filtering rules,
 parameter allow and deny lists, access logging, request validation, and other middleware do not observe.
 The Cache Middleware removes the fragment when building its cache key, allowing a response influenced by
 parameters inside the fragment to be stored under a key that omits those parameters and later served to
 other users. This can bypass filtering and auditing, poison cached responses, and enable stored cross-site
 scripting when an affected parameter is reflected into cached HTML without escaping. Exploitation requires
 a runtime and intermediary path that passes a literal hash character through to the request URL;
 Cloudflare Workers and intermediaries that strip fragments are not affected. This issue is fixed in
 version 4.13.5. (CVE-2026-84363)

Solution

Update the hono library and its related packages to version 4.13.5 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-84363

Plugin Details

Severity: Medium

ID: 463131

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.62

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-84363

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 9/1/2026

Reference Information

CVE: CVE-2026-84363