Is CVE-2026-47675 actively exploited?

No active exploitation of CVE-2026-47675 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-47675 be exploited remotely?

Yes. CVE-2026-47675 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-47675?

CVE-2026-47675 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-47675

CWE-113Published: May 28, 2026· Updated: May 29, 2026

5.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:14.3th

Official Description

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.21, the serialize() function in hono/cookie validates domain and path options against characters that corrupt Set-Cookie header syntax (;, \r, \n), but does not apply the same validation to sameSite and priority. An application that passes user-controlled input into either option may produce a Set-Cookie response header containing attacker-chosen additional attributes. This vulnerability is fixed in 4.12.21.

NVD Source

Technical Analysis

CVE-2026-47675 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.