---
cve: "CVE-2026-31802"
severity: "HIGH"
cvss: 8.2
epss: "25%"
vendor: "isaacs"
kev: false
exploited: false
published: "2026-03-10 07:44:58"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-08T10:56:11+02:00"
---

# CVE-2026-31802

> 8.2 HIGH · 🧪 PoC

## Beschreibung

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- bf776f673164215074b62749e0fe80e5834588f4 (Commit)
- f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad (Commit)

## Referenzen

- <https://github.com/isaacs/node-tar/security/advisories/GHSA-9ppj-qmqm-q256>
- <https://github.com/isaacs/node-tar/commit/f48b5fa3b7985ddab96dc0f2125a4ffc9911b6ad>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-31802) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_