CVE-2026-45723

Summary

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.

Affected Software

VendorProductVersion RangeStatus
siderolabsomni< 1.6.6affected
siderolabsomni>= 1.7.0, < 1.7.3affected

Weaknesses

  • 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)

References