Description
Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.6.6 and 1.7.3, managementServer.CreateSchematic in internal/backend/grpc/schematics.go passes the caller-controlled TalosVersion field to imageFactoryClient.OverlaysVersions without validating it as a version. An authenticated Operator can submit traversal segments in TalosVersion, and url.URL.JoinPath normalizes them into unintended paths on the configured image-factory host. Omni then issues HTTP GET requests to those paths and reflects error-body content, enabling same-host endpoint probing and possible disclosure of internal diagnostics while preventing redirection to another host or write requests. This issue is fixed in versions 1.6.6 and 1.7.3.
References7
- github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb3…
- github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5e…
- github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16…
- github.com/siderolabs/omni/pull/2817
- github.com/siderolabs/omni/releases/tag/v1.6.6
- github.com/siderolabs/omni/releases/tag/v1.7.3
- github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-f…
Metrics
- CVSS 3.1
-
2.7
LOW
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 43 · as of 8 November 2026
- CWE
- CWE-20CWE-22CWE-209CWE-441CWE-918
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