---
cve: "CVE-2026-62843"
severity: "MEDIUM"
cvss: 6.8
epss: "26%"
vendor: "filebrowser"
kev: false
exploited: false
published: "2026-07-15 16:16:52"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T14:02:31+02:00"
---

# CVE-2026-62843

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. From 2.63.6 to 2.63.16, File Browser's archive builder uses strings.ReplaceAll(nameInArchive, "\", "/"), which turns a POSIX filename such as ..\..\evil.sh into the archive entry ../../evil.sh, allowing a user with upload permission to plant a backslash-named file that escapes the extraction directory when another user downloads and extracts the generated zip or tar archive. This issue is fixed in version 2.63.17.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 8503ba61ff51d48a7313896483d130eb6a5abfe0 (Commit)
- d76b7d161099853f17e71b1327ce4545a30c27a2 (Commit)

## Referenzen

- <https://github.com/filebrowser/filebrowser/security/advisories/GHSA-83xp-526h-j3ww>
- <https://github.com/filebrowser/filebrowser/commit/8503ba61ff51d48a7313896483d130eb6a5abfe0>
- <https://github.com/filebrowser/filebrowser/releases/tag/v2.63.17>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-62843) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_