CVE-2026-41267

HIGH

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

Title source: cna
STIX 2.1

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)

Core 1
Core References

Scores

CVSS v3 8.1
EPSS 0.0033
EPSS Percentile 25.0%
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 (2)
FlowiseAI/Flowise < 3.1.0
npm/flowise 0 - 3.1.0npm
Published Apr 23, 2026
Tracked Since Apr 24, 2026