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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-45723
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-17 20:16:49 UTC
Updated2026-09-23 18:12:04 UTC
DescriptionOmni 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.

Risk And Classification

Primary CVSS: v3.1 2.7 LOW from [email protected]

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

EPSS: 0.003860000 probability, percentile 0.325770000 (date 2026-09-23)

Problem Types: CWE-20 | CWE-22 | CWE-209 | CWE-441 | CWE-918 | CWE-20 CWE-20: Improper Input Validation | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-209 CWE-209: Generation of Error Message Containing Sensitive Information | CWE-441 CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') | CWE-918 CWE-918: Server-Side Request Forgery (SSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary2.7LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED2.7LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Siderolabs Omni affected < 1.6.6 Not specified
CNA Siderolabs Omni affected >= 1.7.0, < 1.7.3 Not specified

References

ReferenceSourceLinkTags
github.com/siderolabs/omni/releases/tag/v1.7.3 [email protected] github.com
github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7 [email protected] github.com
github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5 [email protected] github.com
github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5eafca16d0025 [email protected] github.com
github.com/siderolabs/omni/releases/tag/v1.6.6 [email protected] github.com
github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb34b94eea1192 [email protected] github.com
github.com/siderolabs/omni/pull/2817 [email protected] github.com
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