Is CVE-2026-47673 actively exploited?

No active exploitation of CVE-2026-47673 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-47673 be exploited remotely?

Yes. CVE-2026-47673 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-47673?

CVE-2026-47673 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-47673

CWE-285Published: May 28, 2026· Updated: May 29, 2026

6.5

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.1th

Official Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the jwt and jwk middlewares do not verify that the Authorization header value uses theBearer scheme. Any two-part header value — regardless of the scheme name in the first position — proceeds to JWT verification. A request presenting a valid JWT under a non-Bearer scheme identifier (such as Basic or Token) is authenticated identically to a correctly formed Bearer request. This vulnerability is fixed in 4.12.21.

NVD Source

Technical Analysis

CVE-2026-47673 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.