CVE-2026-42862

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 tool update endpoint of FlowiseAI. The endpoint allows authenticated users to modify server-controlled properties such as workspaceId, createdDate, and updatedDate when updating a tool resource. Due to missing server-side validation and authorization checks, an attacker can manipulate the workspaceId field and reassign tools to arbitrary workspaces. This breaks tenant isolation in multi-workspace environments. This issue has been patched in version 3.1.2.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2	Product Release Notes
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x5v6-pj28-cwwm	Exploit Vendor Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x5v6-pj28-cwwm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-08 16:16

Updated : 2026-07-23 07:10

NVD link : CVE-2026-42862

Mitre link : CVE-2026-42862

CVE.ORG link : CVE-2026-42862

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-284

Improper Access Control

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-915

Improperly Controlled Modification of Dynamically-Determined Object Attributes

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El endpoint permite a los usuarios autenticados modificar propiedades controladas por el servidor, como workspaceId, createdDate y updatedDate, al actualizar un recurso de herramienta. Debido a la falta de validaci\u00f3n del lado del servidor y comprobaciones de autorizaci\u00f3n, un atacante puede manipular el campo workspaceId y reasignar herramientas a espacios de trabajo arbitrarios. Esto rompe el aislamiento de inquilinos en entornos multi-espacio de trabajo. Este problema ha sido parcheado en la versi\u00f3n 3.1.2."}], "lastModified": "2026-07-23T07:10:00.113", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7CB8FEE7-C35E-4F6A-A394-033B158A1552", "versionEndExcluding": "3.1.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}