CVE-2026-39429
Published:April 08, 2026
Updated:April 20, 2026
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.
Affected Packages
https://github.com/kcp-dev/kcp.git (GITHUB):
Affected version(s) >=v0.2.0 <v0.29.3Fix Suggestion:
Update to version v0.29.3https://github.com/kcp-dev/kcp.git (GITHUB):
Affected version(s) >=v0.30.0 <v0.30.3Fix Suggestion:
Update to version v0.30.3github.com/kcp-dev/kcp (GO):
Affected version(s) >=v0.30.0 <v0.30.3Fix Suggestion:
Update to version v0.30.3github.com/kcp-dev/kcp (GO):
Affected version(s) >=v0.0.0-20210423202549-c80d871efbc7 <v0.29.3Fix Suggestion:
Update to version v0.29.3Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.08
