SecuriTricks - CVE-2026-39429

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.

Product(s) Impacted

Vendor	Product	Versions
Kcp	Kcp	<0.30.3,<0.29.3

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-302

Authentication Bypass by Assumed-Immutable Data

The authentication scheme or implementation uses key data elements that are assumed to be immutable, but can be controlled or modified by the attacker.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	kcp	kcp	<0.30.3,<0.29.3	/	/	/	/	/	/	/

References

https://github.com/kcp-dev/kcp/releases/tag/v0.29.3

https://github.com/kcp-dev/kcp/releases/tag/v0.30.3

https://github.com/kcp-dev/kcp/security/advisories/GHSA-3j3q-wp9x-585p

CVSS Score

8.2 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: NONE
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: LOW
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

View Vector String

Timeline

Published: April 8, 2026, 9:16 p.m.
Last Modified: April 8, 2026, 9:26 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

[email protected]

CVE-2026-39429