Description

kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.26.3, the identified vulnerability allows creating or deleting an object via the APIExport VirtualWorkspace in any arbitrary target workspace for pre-existing resources. By design, this should only be allowed when the workspace owner decides to give access to an API provider by creating an APIBinding. With this vulnerability, it is possible for an attacker to create and delete objects even if none of these requirements are satisfied, i.e. even if there is no APIBinding in that workspace at all or the workspace owner has created an APIBinding, but rejected a permission claim. A fix for this issue has been identified and has been published with kcp 0.26.3 and 0.27.0.

Classification

CVE ID: CVE-2025-29922

CVSS Base Severity: CRITICAL

CVSS Base Score: 9.6

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

Affected Products

Vendor: kcp-dev

Product: kcp

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.03% (probability of being exploited)

EPSS Percentile: 8.64% (scored less or equal to compared to others)

EPSS Date: 2025-04-18 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-29922
https://github.com/kcp-dev/kcp/security/advisories/GHSA-w2rr-38wv-8rrp
https://github.com/kcp-dev/kcp/pull/3338
https://github.com/kcp-dev/kcp/commit/614ecbf35f11db00f65391ab6fbb1547ca8b5d38

Timeline