# CVE-2026-55832

## Summary

- **CVE ID:** CVE-2026-55832
- **Severity:** MEDIUM
- **CVSS Score:** 6.1 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L)
- **CWE:** CWE-22
- **Published:** Sep 14, 2026
- **Last Modified:** Sep 14, 2026

## 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.

## Affected Products

- sonos — tract (< 0.21.17)
- sonos — tract (>= 0.22.0, < 0.22.3)
- sonos — tract (>= 0.23.0, < 0.23.2)

## References

- [CNA](https://github.com/sonos/tract/security/advisories/GHSA-h668-6x6g-f8r5)
- [CNA](https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f)
- [CNA](https://github.com/sonos/tract/commit/85f4fac23e43d417782e8ed9f9465be8474f5c98)
- [CNA](https://github.com/sonos/tract/commit/8fdacbd7abe4e6f929cadfe52e7f69e2227c0632)
- [CNA](https://github.com/sonos/tract/releases/tag/0.21.17)
- [CNA](https://github.com/sonos/tract/releases/tag/0.22.3)
- [CNA](https://github.com/sonos/tract/releases/tag/v0.23.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 14.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._