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.
History

Wed, 15 Apr 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Kcp
Kcp kcp
CPEs cpe:2.3:a:kcp:kcp:*:*:*:*:*:*:*:*
Vendors & Products Kcp
Kcp kcp

Fri, 10 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Kcp-dev
Kcp-dev kcp
Vendors & Products Kcp-dev
Kcp-dev kcp

Wed, 08 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
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.
Title kcp's cache server is accessible without authentication or authorization checks
Weaknesses CWE-302
CWE-862
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-08T20:16:04.015Z

Updated: 2026-04-10T20:49:31.041Z

Reserved: 2026-04-07T00:23:30.596Z

Link: CVE-2026-39429

cve-icon Vulnrichment

Updated: 2026-04-10T20:49:27.033Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-08T21:16:59.313

Modified: 2026-04-15T19:15:39.097

Link: CVE-2026-39429

cve-icon Redhat

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