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CVE-2026-41267

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

Published: Apr 23, 2026Updated: Apr 23, 2026 Sources: CVE List
NVD MITRE
8.1CVSS
HIGH

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High

Weaknesses

CWE-639CWE-639: Authorization Bypass Through User-Controlled KeyCWE-915CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

Affected Products

Flowise
FlowiseAI

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

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

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