---
cve: "CVE-2026-39822"
severity: "HIGH"
cvss: 7.8
epss: "23%"
vendor: "Go standard library"
kev: false
exploited: false
published: "2026-07-08 17:17:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T07:50:36+02:00"
---

# CVE-2026-39822

> 7.8 HIGH

## Beschreibung

On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /. For example, 'root.Open("symlink/")' will open "symlink" even when "symlink" is a symbolic link pointing outside of the root.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- d80d9a98f7e3a8f9b3a82d2c6079f84eb1101d46 (Commit)
- c19862e5f8415b4f24b189d065ed739517c548ba (Commit)

## Referenzen

- <https://go.dev/issue/79005>
- <https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc>
- <https://go.dev/cl/797880>
- <https://pkg.go.dev/vuln/GO-2026-4970>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39822) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_