---
cve: "CVE-2026-5027"
severity: "HIGH"
cvss: 8.8
epss: "36.1%"
vendor: "langflow-ai"
kev: false
exploited: false
published: "2026-03-27 15:17:04"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T03:36:29+02:00"
---

# CVE-2026-5027

> 8.8 HIGH

## Beschreibung

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| 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 |

## Exploit-Evidenz

- [EDB-52659 — Langflow  1.8.4 - Path Traversal to Remote Code Execution](https://www.exploit-db.com/exploits/52659)

## Patch verfügbar (OSV)

- a47f2ad17eb662e940c550cfccb64a87dddd7e0b (Commit)

## Referenzen

- <https://www.tenable.com/security/research/tra-2026-26>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-5027) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_