{"id":"CVE-2026-55832","aliases":["GHSA-h668-6x6g-f8r5"],"url":"https://o3.security/vulnerability/CVE-2026-55832","summary":"Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx","details":"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.","published":"2026-09-14T17:57:41.374Z","modified":"2026-09-16T03:47:01.768689429Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"crates.io","name":"tract-onnx","fixedVersion":"0.21.17"},{"ecosystem":"crates.io","name":"tract-onnx","fixedVersion":"0.22.3"},{"ecosystem":"crates.io","name":"tract-onnx","fixedVersion":"0.23.2"}],"fix":{"url":"https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f","label":"sonos/tract@5f994bc"},"references":[{"type":"WEB","url":"https://github.com/sonos/tract/releases/tag/0.21.17"},{"type":"WEB","url":"https://github.com/sonos/tract/releases/tag/0.22.3"},{"type":"WEB","url":"https://github.com/sonos/tract/releases/tag/v0.23.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55832.json"},{"type":"ADVISORY","url":"https://github.com/sonos/tract/security/advisories/GHSA-h668-6x6g-f8r5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55832"},{"type":"FIX","url":"https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f"},{"type":"FIX","url":"https://github.com/sonos/tract/commit/85f4fac23e43d417782e8ed9f9465be8474f5c98"},{"type":"FIX","url":"https://github.com/sonos/tract/commit/8fdacbd7abe4e6f929cadfe52e7f69e2227c0632"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T03:47:01.768689429Z"}}