CVE-2026-45723

Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic

Published Sep 17, 2026 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-c66c-vq6w-fvh5 Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Siderolabs
Siderolabs omni
Vendors & Products Siderolabs
Siderolabs omni
Type Values Removed Values Added
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.
Title Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic
Weaknesses CWE-20
CWE-209
CWE-22
CWE-441
CWE-918
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N'}

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 18, 2026, 8:13 PM
Reserved
May 13, 2026, 5:51 AM
Status
Awaiting Analysis
Published
Sep 17, 2026, 8:16 PM
Modified
Sep 23, 2026, 6:12 PM