# CVE-2025-51480: Path traversal in n/a

> Attackers can overwrite arbitrary files by supplying crafted external data paths in the ONNX library, bypassing directory restrictions.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Jul 2025
- **Updated:** 22 Jul 2025
- **Also known as:** AZL-65658, AZL-65661, GHSA-wj32-g77g-8289, UBUNTU-CVE-2025-51480

## What is CVE-2025-51480?

CVE-2025-51480 is a high-severity path traversal vulnerability in n/a, published on 22 Jul 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Path Traversal vulnerability in onnx.external_data_helper.save_external_data in ONNX 1.17.0 allows attackers to overwrite arbitrary files by supplying crafted external_data.location paths containing traversal sequences, bypassing intended directory restrictions.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2025-51480?

It affects 1 product.


Products: Linuxfoundation Onnx.

## How do I fix CVE-2025-51480?

Upgrade to a fixed version.

## Is CVE-2025-51480 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51480 exists.

## Other vulnerabilities in n/a

- [CVE-2024-5187](https://insights.sbomify.com/CVE-2024-5187/): Arbitrary File Overwrite in download_model_with_test_data in onnx/onnx (high 8.8)
- [CVE-2026-27489](https://insights.sbomify.com/CVE-2026-27489/): ONNX: Path Traversal via Symlink (high 8.7)
- [CVE-2026-34445](https://insights.sbomify.com/CVE-2026-34445/): ONNX: Malicious ONNX models can crash servers by exploiting unprotected object settings. (high 8.6)
- [CVE-2026-28500](https://insights.sbomify.com/CVE-2026-28500/): ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack (high 8.6)
- [CVE-2022-25882](https://insights.sbomify.com/CVE-2022-25882/): Directory Traversal in onnx (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-51480 and fix it if it is affected.

What it is: CVE-2025-51480 is a high-severity path traversal vulnerability in n/a, published on 22 Jul 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-51480 exists.

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-51480/ (Markdown: https://insights.sbomify.com/CVE-2025-51480/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-51480
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-51480
- OSV: https://osv.dev/vulnerability/CVE-2025-51480

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-51480/
Summaries are generated and may contain mistakes; the official description above is the record.