CVE-2026-55832Tract: Arbitrary file read via unsanitized ONNX external_data `location` (path traversal) on model load in tract-onnx
- 6.1MediumCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. A reference of the record is tagged as an exploit. CISA's SSVC rates its exploitation: a proof of concept is public.
Show the exploits1
References tagged exploit1 reference
- https://github.com/sonos/tract/security/advisories/GHSA-h668-6x6g-f8r5 (opens in a new tab)x_refsource_CONFIRMexploit
Timeline
ID reserved
By GitHub_M
- 3 months later
· 3 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L |
| NVDNVD · Deferred | 3.1 | Medium6.1 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- crates.iotract-onnxGHSA-h668-6x6g-f8r5 (opens in a new tab)
References
References7
- https://github.com/sonos/tract/security/advisories/GHSA-h668-6x6g-f8r5 (opens in a new tab)x_refsource_CONFIRMexploit
- https://github.com/sonos/tract/commit/5f994bcf3cec9b343830a975fedce177f9190d0f (opens in a new tab)x_refsource_MISC
- https://github.com/sonos/tract/commit/85f4fac23e43d417782e8ed9f9465be8474f5c98 (opens in a new tab)x_refsource_MISC
- https://github.com/sonos/tract/commit/8fdacbd7abe4e6f929cadfe52e7f69e2227c0632 (opens in a new tab)x_refsource_MISC
- https://github.com/sonos/tract/releases/tag/0.21.17 (opens in a new tab)x_refsource_MISC
- https://github.com/sonos/tract/releases/tag/0.22.3 (opens in a new tab)x_refsource_MISC
- https://github.com/sonos/tract/releases/tag/v0.23.2 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-77721 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-h668-6x6g-f8r5 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-55832)Record last updated .