CVE-2026-41277 Details
Description
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.
A mass assignment vulnerability has been identified in Flowise versions prior to 3.1.0, specifically within the DocumentStore creation endpoint. This vulnerability allows authenticated users to manipulate the primary key and internal state fields of DocumentStore entities. The issue arises because the service uses repository.save() with a client-supplied primary key, effectively turning the POST create endpoint into an implicit UPSERT operation. As a result, existing DocumentStore objects can be overwritten. In multi-workspace or multi-tenant deployments, this vulnerability can lead to cross-workspace object takeover and broken object-level authorization, allowing an attacker to reassign or modify DocumentStore objects belonging to other workspaces.
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:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 25, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3prp-9gf7-4rxx | CISA-ADP | ExploitVendor Advisory |
| https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3prp-9gf7-4rxx | [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 | < 3.1.0 |
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 25, 2026 | CVE Modified | CISA-ADP |
| Apr 24, 2026 | Initial Analysis | [email protected] |
| Apr 23, 2026 | New CVE Received | [email protected] |