CVE-2026-41267

HIGH

Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association

Title source: cna

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.

References (1)

[X_Refsource_Confirm] https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj

Scores

CVSS v3 8.1

EPSS 0.0032

EPSS Percentile 54.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-639 CWE-915

Status published

Products (1)

FlowiseAI/Flowise < 3.1.0

Published Apr 23, 2026

Tracked Since Apr 24, 2026