---
cve: "CVE-2026-42861"
severity: "HIGH"
cvss: 7.6
epss: "25%"
vendor: "FlowiseAI"
kev: false
exploited: false
published: "2026-06-08 16:16:39"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T17:53:12+02:00"
---

# CVE-2026-42861

> 7.6 HIGH · 🧪 PoC

## Beschreibung

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the variable update endpoint of FlowiseAI. The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating a variable resource. Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign variables to arbitrary workspaces. This behavior may break tenant isolation in multi-workspace environments. This issue has been patched in version 3.1.2.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 4114b3b506e7bbee155141175a2ba48e426919dd (Commit)

## Referenzen

- <https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6fw7-3q8r-m5vj>
- <https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42861) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_