CVE-2026-55832

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.

References

• https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f
• https://github.com/sonos/tract/commit/85f4fac23e43d417782e8ed9f9465be8474f5c98
• https://github.com/sonos/tract/commit/8fdacbd7abe4e6f929cadfe52e7f69e2227c0632
• https://github.com/sonos/tract/releases/tag/0.21.17
• https://github.com/sonos/tract/releases/tag/0.22.3