CVE-2026-45723
Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Timeline
ID reserved
By GitHub_M
- 4 months later
· 4 months later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Awaiting Analysis | 3.1 | Low2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.49% · top 57% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.7.
Weakness
- CWE-20: Improper Input Validation (opens in a new tab)All about CWE-20 and its CVEs
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (opens in a new tab)All about CWE-22 and its CVEs
- CWE-209: Generation of Error Message Containing Sensitive Information (opens in a new tab)All about CWE-209 and its CVEs
- CWE-441: Unintended Proxy or Intermediary ('Confused Deputy') (opens in a new tab)All about CWE-441 and its CVEs
- CWE-918: Server-Side Request Forgery (SSRF) (opens in a new tab)All about CWE-918 and its CVEs
Affected products
- affected < 1.6.6
- affected >= 1.7.0, < 1.7.3
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/siderolabs/omniGHSA-c66c-vq6w-fvh5 (opens in a new tab)
References (7)
- https://github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/siderolabs/omni/pull/2817 (opens in a new tab)x_refsource_MISC
- https://github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb34b94eea1192 (opens in a new tab)x_refsource_MISC
- https://github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5eafca16d0025 (opens in a new tab)x_refsource_MISC
- https://github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7 (opens in a new tab)x_refsource_MISC
- https://github.com/siderolabs/omni/releases/tag/v1.6.6 (opens in a new tab)x_refsource_MISC
- https://github.com/siderolabs/omni/releases/tag/v1.7.3 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-c66c-vq6w-fvh5 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-45723)Record last updated .