Is CVE-2026-39429 actively exploited?

No active exploitation of CVE-2026-39429 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39429 be exploited remotely?

Yes. CVE-2026-39429 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39429?

CVE-2026-39429 has a CVSS score of 9.1 (CRITICAL).

HOME VULNERABILITIESCVE-2026-39429

CRITICAL

CVE-2026-39429

CWE-302Published: April 8, 2026· Updated: Apr 15, 2026

9.1

CVSS v3.1

EPSS:0.07%probability of exploitation in 30 daysPercentile:20.8th

Official Description

kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.30.3 and 0.29.3, the cache server is directly exposed by the root shard and has no authentication or authorization in place. This allows anyone who can access the root shard to read and write to the cache server. This vulnerability is fixed in 0.30.3 and 0.29.3.

NVD Source

Technical Analysis

CVE-2026-39429 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.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.