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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-h668-6x6g-f8r5 tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx
Fixes

Solution

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Workaround

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History

Mon, 14 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-14T18:12:59.928Z

Reserved: 2026-06-17T16:29:38.864Z

Link: CVE-2026-55832

cve-icon Vulnrichment

Updated: 2026-09-14T18:12:35.751Z

cve-icon NVD

Status : Received

Published: 2026-09-14T18:17:55.663

Modified: 2026-09-14T19:17:32.717

Link: CVE-2026-55832

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses