EUVD-2026-104537Published

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection f…

Exact source revision recorded 7 Nov 2026 04:32:52 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-104537

Published

Hono is a Web application framework that provides support for any JavaScript runtime. From 4.12.4 until 4.13.11, serveStatic can interpret a malformed percent-encoded path differently from upstream routing middleware and bypass protection for a static prefix. The root cause is serveStatic decodes a routed request path a second time before filesystem lookup. The attack mechanism is malformed percent encoding survives the first routing interpretation and becomes a protected path only during the later static-file decode. The affected component is serveStatic. The trigger conditions are an application protects a static prefix with upstream middleware and serveStatic receives an attacker-controlled malformed percent-encoded path. The impact is unauthorized disclosure of a static file that upstream middleware was intended to protect. The issue does not permit traversal outside the configured static root. This issue is fixed in version 4.13.11.

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Oct 19, 2026, 5:31:20 PM

dateUpdated: Oct 20, 2026, 4:10:30 PM

3 related source bulletins · separate from aliases

RHSA-2026:84423: Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

CVE-2026-109955 · CVE-2026-111757

RHSA-2026:85295: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2026-92539 · CVE-2026-93294 · CVE-2026-111757

RHSA-2026:85544: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

CVE-2026-15577 · CVE-2026-33374 · CVE-2026-92539 · CVE-2026-93294 · CVE-2026-95502 · CVE-2026-111757

Source published: Oct 19, 2026, 5:31:20 PM (timezone not stated)
Source modified: Oct 20, 2026, 4:10:30 PM (timezone not stated)
Observed here: 7 Nov 2026 04:32:52 UTC
Source terms: ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N