CVE-2026-39429

CRITICAL EPSS 34.9%
Published Apr 8, 20262mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Apr 8, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.1
Exploitability
3.9
Impact
5.2
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
34.9% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-302
CWE-862 Missing Authorization Authorization

Affected Products 2

VendorProductVersionRange
kcpkcp* <0.29.3
kcpkcp*≥0.30.0  –  <0.30.3

References 3

  • github.com https://github.com/kcp-dev/kcp/releases/tag/v0.29.3
    Release Notes
  • github.com https://github.com/kcp-dev/kcp/releases/tag/v0.30.3
    Release Notes
  • github.com https://github.com/kcp-dev/kcp/security/advisories/GHSA-3j3q-wp9x-585p
    ExploitMitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.