---
cve: "CVE-2026-27489"
severity: "HIGH"
cvss: 8.7
epss: "59%"
vendor: "onnx"
kev: false
exploited: false
published: "2026-04-01 18:16:28"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T16:39:25+02:00"
---

# CVE-2026-27489

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- be2b5fde82d9c8874f3d19328bdfe3b6962dc67b (Commit)
- 4755f8053928dce18a61db8fec71b69c74f786cb (Commit)

## Referenzen

- <https://github.com/onnx/onnx/security/advisories/GHSA-3r9x-f23j-gc73>
- <https://github.com/onnx/onnx/commit/4755f8053928dce18a61db8fec71b69c74f786cb>
- <https://access.redhat.com/errata/RHSA-2026:24977>
- <https://access.redhat.com/security/cve/CVE-2026-27489>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2453929>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27489.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27489) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_