CVE-2026-41277

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Mass Assignment vulnerability in the DocumentStore creation endpoint allows authenticated users to control the primary key (id) and internal state fields of DocumentStore entities. Because the service uses repository.save() with a client-supplied primary key, the POST create endpoint behaves as an implicit UPSERT operation. This enables overwriting existing DocumentStore objects. In multi-workspace or multi-tenant deployments, this can lead to cross-workspace object takeover and broken object-level authorization (IDOR), allowing an attacker to reassign or modify DocumentStore objects belonging to other workspaces. This vulnerability is fixed in 3.1.0.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3prp-9gf7-4rxx	Exploit Vendor Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3prp-9gf7-4rxx	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-04-23 20:16

Updated : 2026-06-17 10:46

NVD link : CVE-2026-41277

Mitre link : CVE-2026-41277

CVE.ORG link : CVE-2026-41277

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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