CVE-2026-39429
kcp's cache server is accessible without authentication or authorization checks
CVSS Score
8.2
EPSS Score
0.1%
EPSS Percentile
21th
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.
| CWE | CWE-862 CWE-302 |
| Vendor | kcp-dev |
| Product | kcp |
| Published | Apr 8, 2026 |
| Last Updated | Apr 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
kcp-dev / kcp
>= 0.30.0, < 0.30.3 < 0.29.3