Vulnerability · Published Mar 20, 2025 · Assigned by GitHub_M
CVE-2025-29922kcp allows unauthorized creation and deletion of objects in arbitrary workspaces through APIExport Virtual Workspace
Critical 9.6
In plain English
A critical-severity security flaw in kcp from kcp-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/kcp-dev/kcp | 0.26.3 | GHSA-w2rr-38wv-8rrp |
| Go | github.com/kcp-dev/kcp | 0.26.3 | GO-2025-3538 |
Affected products (as reported)
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
References
- https://github.com/kcp-dev/kcp/security/advisories/GHSA-w2rr-38wv-8rrp x_refsource_CONFIRM
- https://github.com/kcp-dev/kcp/pull/3338 x_refsource_MISC
- https://github.com/kcp-dev/kcp/commit/614ecbf35f11db00f65391ab6fbb1547ca8b5d38 x_refsource_MISC