CVE-2026-39429
Last modified
CVE-2026-39429 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.44% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kcp | Kcp | < 0.29.3 |
| Kcp | Kcp | >= 0.30.0, < 0.30.3 |
References
- https://github.com/kcp-dev/kcp/releases/tag/v0.29.3Release Notes
- https://github.com/kcp-dev/kcp/releases/tag/v0.30.3Release Notes
- https://github.com/kcp-dev/kcp/security/advisories/GHSA-3j3q-wp9x-585pExploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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