{"id":"CVE-2026-45723","state":"PUBLISHED","title":"Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic","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.","publishedAt":"2026-09-17T19:39:28.303Z","updatedAt":"2026-09-18T20:13:13.232Z","severity":{"score":2.7,"label":"Low","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["siderolabs omni"],"affected":[{"vendor":"siderolabs","product":"omni","versions":[{"version":"< 1.6.6","status":"affected"},{"version":">= 1.7.0, < 1.7.3","status":"affected"}]}],"references":["https://github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5","https://github.com/siderolabs/omni/pull/2817","https://github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb34b94eea1192","https://github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5eafca16d0025","https://github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7","https://github.com/siderolabs/omni/releases/tag/v1.6.6","https://github.com/siderolabs/omni/releases/tag/v1.7.3"],"weaknesses":["CWE-20","CWE-22","CWE-209","CWE-441","CWE-918"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45723.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45723","state":"PUBLISHED","datePublished":"2026-09-17T19:39:28.303Z","dateUpdated":"2026-09-18T20:13:13.232Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T05:51:48.666Z"},"containers":{"cna":{"title":"Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic","descriptions":[{"lang":"en","value":"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":[{"vendor":"siderolabs","product":"omni","versions":[{"version":"< 1.6.6","status":"affected"},{"version":">= 1.7.0, < 1.7.3","status":"affected"}]}],"references":[{"url":"https://github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5","name":"https://github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/siderolabs/omni/pull/2817","name":"https://github.com/siderolabs/omni/pull/2817","tags":["x_refsource_MISC"]},{"url":"https://github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb34b94eea1192","name":"https://github.com/siderolabs/omni/commit/13c3f289789842e1fd954d98babb34b94eea1192","tags":["x_refsource_MISC"]},{"url":"https://github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5eafca16d0025","name":"https://github.com/siderolabs/omni/commit/3e69e80802624bf322f16aa499d5eafca16d0025","tags":["x_refsource_MISC"]},{"url":"https://github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7","name":"https://github.com/siderolabs/omni/commit/9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7","tags":["x_refsource_MISC"]},{"url":"https://github.com/siderolabs/omni/releases/tag/v1.6.6","name":"https://github.com/siderolabs/omni/releases/tag/v1.6.6","tags":["x_refsource_MISC"]},{"url":"https://github.com/siderolabs/omni/releases/tag/v1.7.3","name":"https://github.com/siderolabs/omni/releases/tag/v1.7.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":2.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"CWE-20: Improper Input Validation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-209","lang":"en","description":"CWE-209: Generation of Error Message Containing Sensitive Information","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-441","lang":"en","description":"CWE-441: Unintended Proxy or Intermediary ('Confused Deputy')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-17T19:39:28.303Z"},"source":{"advisory":"GHSA-c66c-vq6w-fvh5","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T20:10:42.448358Z","id":"CVE-2026-45723","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T20:13:13.232Z"}}]}}}