Is CVE-2026-47676 actively exploited?

No active exploitation of CVE-2026-47676 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-47676 be exploited remotely?

Yes. CVE-2026-47676 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-47676?

CVE-2026-47676 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-47676

CWE-444Published: May 28, 2026· Updated: May 29, 2026

5.3

CVSS v3.1

EPSS:0.05%probability of exploitation in 30 daysPercentile:15.4th

Official Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, app.mount() strips the mount prefix from the incoming request path using the raw URL pathname, while route matching is performed against the percent-decoded path. This inconsistency causes the prefix to be stripped at the wrong position when the path contains percent-encoded multi-byte characters, resulting in the mounted sub-application receiving an incorrect path. This vulnerability is fixed in 4.12.21.

NVD Source

Technical Analysis

CVE-2026-47676 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.