Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-45723
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:18 UTC · Revision 1
Source evidence
Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic
core-osv · Original sourcePublished 17 Sept 2026, 19:39 UTC
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.
osv:CVE-2026-45723
Complete source record
{
"id": "0af1ed861e8eb39ddda448d6320c75a5fe7b5933a256e8bb07eb24edda18f4a2",
"url": "https://osv.dev/vulnerability/CVE-2026-45723",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Omni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematic",
"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.",
"evidence": "osv:CVE-2026-45723",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-45723",
"aliases": [
"CVE-2026-45723",
"GHSA-c66c-vq6w-fvh5",
"GO-2026-5316"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/siderolabs/omni",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "9769f9442e302e000401e351ffd6d6fb3671a5bf"
},
{
"introduced": "5e912b14ddad86d13d9c004a9774a875e9cee108"
},
{
"fixed": "e70a16e4a226aa2f98643dbed6664edc1a5e90e7"
},
{
"fixed": "13c3f289789842e1fd954d98babb34b94eea1192"
},
{
"fixed": "3e69e80802624bf322f16aa499d5eafca16d0025"
},
{
"fixed": "9426c2cabccaa1d442bc8ebf28c16cae2d7c6ff7"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.6.6"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
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"introduced": "1.7.0"
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{
"fixed": "1.7.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "13c3f289789842e1fd954d98babb34b94eea1192"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "3e69e80802624bf322f16aa499d5eafca16d0025"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
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"source": "REFERENCES_COMMIT"
},
{
"range": [
{
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],
"source": "REFERENCES_TAG",
"original_tag": "v1.6.6"
},
{
"range": [
{
"fixed": "e70a16e4a226aa2f98643dbed6664edc1a5e90e7"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.7.3"
}
]
}
}
],
"versions": [
"v1.6.5",
"client/v1.6.5",
"v1.7.2",
"client/v1.7.2",
"v1.7.1",
"client/v1.7.1",
"v1.7.0",
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"v1.7.0-beta.0",
"client/v1.7.0-beta.0",
"v1.6.4",
"client/v1.6.4",
"v1.6.3",
"client/v1.6.3",
"v1.6.2",
"client/v1.6.2",
"v1.6.1",
"client/v1.6.1",
"v1.6.0",
"client/v1.6.0",
"v1.6.0-beta.3",
"client/v1.6.0-beta.3",
"v1.6.0-beta.2",
"client/v1.6.0-beta.2",
"v1.6.0-beta.1",
"client/v1.6.0-beta.1",
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"v1.5.0-beta.2",
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"v1.5.0-beta.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45723.json"
}
}
],
"modified": "2026-10-28T02:30:37.966719981Z",
"provider": "osv",
"references": [
"https://github.com/siderolabs/omni/releases/tag/v1.6.6",
"https://github.com/siderolabs/omni/releases/tag/v1.7.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45723.json",
"https://github.com/siderolabs/omni/security/advisories/GHSA-c66c-vq6w-fvh5",
"https://nvd.nist.gov/vuln/detail/CVE-2026-45723",
"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/pull/2817"
],
"provider_metadata": {
"cwe_ids": [
"CWE-20",
"CWE-209",
"CWE-22",
"CWE-441",
"CWE-918"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45723.json"
}
},
"related_cves": [
{
"value": "CVE-2026-45723",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 505247,
"published_at": "2026-09-17T19:39:28.303+00:00"
}