Path Traversal in Linuxfoundation Onnx
CVE-2026-27489
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, a path traversal vulnerability via symlink allows to read arbitrary files outside model or user-provided directory. This issue has been patched in version 1.21.0.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
- Linuxfoundation Onnx
- Onnx — versions < 1.21.0
Weakness classification (CWE)
References
- github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73 (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb (Patch)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-27489?
- CVE-2026-27489 is a high-severity vulnerability in Linuxfoundation Onnx, classified under Relative Path Traversal. CVSS score: 7.5/10. Published 2026-04-01.
- How severe is CVE-2026-27489?
- High severity. CVSS v3 base score is 7.5 out of 10.