CVE-2026-42862 Details
Description
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.
A mass assignment vulnerability has been identified in Flowise versions prior to 3.1.2. The issue resides in the tool update endpoint, where authenticated users can modify server-controlled properties such as workspaceId, createdDate, and updatedDate. The vulnerability arises from inadequate server-side validation and authorization checks, enabling attackers to manipulate the workspaceId and reassign tools to arbitrary workspaces, thereby disrupting tenant isolation in multi-workspace environments.
Users can update to Flowise version 3.1.2 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x5v6-pj28-cwwm | CISA-ADP | ExploitVendor Advisory |
| https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2 | [email protected] | ProductRelease Notes |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-x5v6-pj28-cwwm | [email protected] | ExploitVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| 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 | < 3.1.2 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 23, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 11, 2026 | Initial Analysis | [email protected] |
| Jun 8, 2026 | CVE Modified | CISA-ADP |
| Jun 8, 2026 | New CVE Received | [email protected] |