CVE-2026-41267 Details
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.
A vulnerability allowing improper mass assignment (JSON injection) has been identified in Flowise versions prior to 3.1.0. This issue exists in the account registration endpoint of Flowise Cloud, where the backend fails to properly validate client-supplied JSON. As a result, unauthenticated attackers can inject server-managed fields and nested objects during account creation. This exploitation enables manipulation of ownership metadata, timestamps, organization associations, and role mappings, thereby violating trust boundaries in a multi-tenant environment.
Users are advised to update Flowise to version 3.1.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj | CISA-ADP | ExploitVendor Advisory |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
| CWE-915 | Improperly Controlled Modification of Dynamically-Determined Object Attributes | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| flowiseai flowise | < 3.1.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 23, 2026 | New CVE Received | [email protected] |
| Apr 23, 2026 | CVE Modified | CISA-ADP |