Medium
Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx
Type: advisorySources: OSV
Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.17, 0.22.3, and 0.23.2, the tract-onnx crate passes the attacker-controlled external_data location from an ONNX model through onnx/src/tensor.rs get_external_resources and joins the value to the model directory without rejecting absolute paths or parent directory components. Loading an untrusted model through model_for_path can therefore make onnx/src/data_resolver.rs MmapDataResolver open an arbitrary local file and place the file contents into model tensors or inference output. Attacker-controlled offset and length fields can also select an out-of-range mapping slice and cause a denial of service, but the flaw does not write files or execute code. This issue is fixed in versions 0.21.17, 0.22.3, and 0.23.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55832
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 11:01 UTC · Revision 1
Source evidence
Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx
core-osv · Original sourcePublished 14 Sept 2026, 17:57 UTC
Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.17, 0.22.3, and 0.23.2, the tract-onnx crate passes the attacker-controlled external_data location from an ONNX model through onnx/src/tensor.rs get_external_resources and joins the value to the model directory without rejecting absolute paths or parent directory components. Loading an untrusted model through model_for_path can therefore make onnx/src/data_resolver.rs MmapDataResolver open an arbitrary local file and place the file contents into model tensors or inference output. Attacker-controlled offset and length fields can also select an out-of-range mapping slice and cause a denial of service, but the flaw does not write files or execute code. This issue is fixed in versions 0.21.17, 0.22.3, and 0.23.2.
osv:CVE-2026-55832
Complete source record
{
"id": "6c43304ab1f26be3fd6e130bfdd11121691664ff4e3e05a8cdd2c6172f1e7e8d",
"url": "https://osv.dev/vulnerability/CVE-2026-55832",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx",
"summary": "Tract is a tiny, no-nonsense, self-contained TensorFlow and ONNX inference toolkit. Prior to 0.21.17, 0.22.3, and 0.23.2, the tract-onnx crate passes the attacker-controlled external_data location from an ONNX model through onnx/src/tensor.rs get_external_resources and joins the value to the model directory without rejecting absolute paths or parent directory components. Loading an untrusted model through model_for_path can therefore make onnx/src/data_resolver.rs MmapDataResolver open an arbitrary local file and place the file contents into model tensors or inference output. Attacker-controlled offset and length fields can also select an out-of-range mapping slice and cause a denial of service, but the flaw does not write files or execute code. This issue is fixed in versions 0.21.17, 0.22.3, and 0.23.2.",
"evidence": "osv:CVE-2026-55832",
"products": [],
"severity": "medium",
"structured": {
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"aliases": [
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"GHSA-h668-6x6g-f8r5"
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"metrics": [
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"type": "CVSS_V3",
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"database_specific": {
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}
],
"modified": "2026-10-28T02:30:28.200197314Z",
"provider": "osv",
"references": [
"https://github.com/sonos/tract/releases/tag/0.21.17",
"https://github.com/sonos/tract/releases/tag/0.22.3",
"https://github.com/sonos/tract/releases/tag/v0.23.2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55832.json",
"https://github.com/sonos/tract/security/advisories/GHSA-h668-6x6g-f8r5",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55832",
"https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f",
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],
"provider_metadata": {
"cwe_ids": [
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],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55832.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55832",
"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 494802,
"published_at": "2026-09-14T17:57:41.374+00:00"
}