CVE-2026-28500
What it is
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. In versions up to and including 1.20.1, a security control bypass exists in onnx.hub.load() due to improper logic in the repository trust verification mechanism. While the function is designed to warn users when loading models from non-official sources, the use of the silent=True parameter completely suppresses all security warnings and confirmation prompts. This vulnerability transforms a standard model-loading function into a vector for Zero-Interaction Supply-Chain Attacks. When chained with file-system vulnerabilities, an attacker can silently exfiltrate sensitive files (SSH keys, cloud credentials) from the victim's machine the moment the model is loaded. As of time of publication, no known patched versions are available.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 8.6 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-345
- Record status
- Modified
Affected
- Linuxfoundation Onnx ≤ 1.20.1
Attack profile CVSS 3.1 · 8.6
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-28500.md and follow it. Check whether this project is affected by CVE-2026-28500. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md
- https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md
References
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md
- https://github.com/onnx/onnx/security/advisories/GHSA-hqmj-h5c6-369m
- https://access.redhat.com/errata/RHSA-2026:24977
- https://access.redhat.com/security/cve/CVE-2026-28500
- https://bugzilla.redhat.com/show_bug.cgi?id=2448518
- https://github.com/ZeroXJacks/CVEs/blob/main/2026/CVE-2026-28500.md
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28500.json