---
cve: "CVE-2026-78208"
severity: "HIGH"
cvss: 7.5
epss: "30.7%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-08-24 01:16:58"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T01:54:54+02:00"
---

# CVE-2026-78208

> 7.5 HIGH

## Beschreibung

exceljs through 4.4.0 contains a path traversal vulnerability in the Workbook.addImage() function that fails to validate file paths. Attackers can supply arbitrary file paths to read any file accessible to the Node.js process and embed it in the generated workbook.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- ac96f9a61e9799c7776bd940f05c4a51d7200209 (Commit)

## Referenzen

- <https://github.com/exceljs/exceljs>
- <https://github.com/exceljs/exceljs/blob/v4.4.0/lib/doc/workbook.js#L142-L147>
- <https://github.com/exceljs/exceljs/blob/v4.4.0/lib/xlsx/xlsx.js#L421-L429>
- <https://github.com/mateocallec/exceljs-hardened/security/advisories/GHSA-m8mg-8574-gm3m>
- <https://www.vulncheck.com/advisories/exceljs-through-path-traversal-via-unvalidated-addimage-filename>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-78208) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_