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Critical

A vulnerability in the `download_model` function of the onnx/onnx framework, before and including version 1.16.1, allows for arbitrary file overwrite due to inadequate prevention of path traversal att

  • Disclosed: 20.03.2025
  • Updated: 11.10.2026 12:20

A vulnerability in the download_model function of the onnx/onnx framework, before and including version 1.16.1, allows for arbitrary file overwrite due to inadequate prevention of path traversal attacks in malicious tar files. This vulnerability can be exploited by an attacker to overwrite files in the user's directory, potentially leading to remote command execution.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) onnx < 1.16.2 1.16.2

References

CVSS score 9.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE)
CWE-22
Platform
Python (PyPI)
Package
onnx
Disclosed
20.03.2025
Updated
11.10.2026 12:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-h36j-8vv3-cj52 - CC BY 4.0

OSV / GitHub Advisory Database - PYSEC-2025-10 - PyPA Advisory Database; CC BY 4.0

Vulnerability history: onnx

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (13) in the archive
Total entries
13
First → latest
01.2023 07.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 7
  • Medium 4
  • Low 1

Disclosures per year

Severity:
  1. ONNX: TOCTOU arbitrary file read/write in save_external_dat
    High · 7.1 CVE-2026-49114 < 1.21.0 1.21.0
  2. ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings.
    High · 8.6 CVE-2026-34445 < 1.21.0 1.21.0
  3. onnx Vulnerable to Path Traversal via Symlink
    High CVE-2026-27489 < 1.21.0 1.21.0
  4. ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack
    High · 8.6 CVE-2026-28500 < 1.21.0rc1 1.21.0rc1
  5. A vulnerability in the `download_model` function of the onnx/onnx framework, before and including version 1.16.1, allows for arbitrary file overwrite due to inadequate prevention of path traversal att this entry
    Critical · 9.1 CVE-2024-7776 < 1.16.2 1.16.2
  6. onnx allows Arbitrary File Overwrite in download_model_with_test_data
    High · 8.8 CVE-2024-5187 < 1.16.2 1.16.2
  7. Onnx Directory Traversal vulnerability
    High · 7.5 CVE-2024-27318 < 1.16.0 1.16.0
  8. Versions of the package onnx before 1.13.0 are vulnerable to Directory Traversal as the external_data field of the tensor proto can have a path to the file which is outside the model current directory
    High · 7.5 CVE-2022-25882 < 1.13.0 1.13.0

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