Sonos tract up to 0.21.16/0.22.2/0.23.1 External Data Path Resolution onnx/src/tensor.rs get_external_resources offset/length path traversal

Summaryinfo

A vulnerability categorized as problematic has been discovered in Sonos tract up to 0.21.16/0.22.2/0.23.1. This vulnerability affects the function get_external_resources of the file onnx/src/tensor.rs of the component External Data Path Resolution. Such manipulation of the argument offset/length leads to path traversal. This vulnerability is referenced as CVE-2026-55832. The attack can only be performed from a local environment. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Sonos tract up to 0.21.16/0.22.2/0.23.1. Affected by this issue is the function get_external_resources of the file onnx/src/tensor.rs of the component External Data Path Resolution. The manipulation of the argument offset/length with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-55832 since 06/17/2026. The exploitation is known to be easy. Local access is required to approach this attack. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 0.21.17, 0.22.3 or 0.23.2 eliminates this vulnerability.

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Productinfo

Vendor

• Sonos

Name

• tract

Version

• 0.21.0
• 0.21.1
• 0.21.2
• 0.21.3
• 0.21.4
• 0.21.5
• 0.21.6
• 0.21.7
• 0.21.8
• 0.21.9
• 0.21.10
• 0.21.11
• 0.21.12
• 0.21.13
• 0.21.14
• 0.21.15
• 0.21.16
• 0.22.0
• 0.22.1
• 0.22.2
• 0.23.0
• 0.23.1

Website

• Product: https://github.com/sonos/tract/

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