CVE-2026-91933: Authorization Bypass Through User-Controlled Key in FlowiseAI Flowise
Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.
AI Analysis
Technical Summary
CVE-2026-91933 is an authorization bypass vulnerability in Flowise before version 3.1.4. The flaw exists because the openai-realtime endpoints do not enforce workspace-level authorization checks, allowing authenticated users to supply an unscoped chatflowid to access tools belonging to other workspaces. Attackers can perform GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, potentially causing external side effects and exposing sensitive outputs.
Potential Impact
An attacker with valid authentication can bypass workspace authorization controls to access and execute tools in other users' workspaces. This can lead to unauthorized access to sensitive tool outputs and unintended external side effects caused by tool execution. The CVSS score of 7.1 (high severity) reflects the significant confidentiality and integrity impact, with limited attack complexity but requiring low privileges.
Mitigation Recommendations
A fix is available in Flowise version 3.1.4. Users should upgrade to version 3.1.4 or later to ensure workspace-level authorization checks are properly enforced in the openai-realtime endpoints. No other mitigation guidance is provided.
CVE-2026-91933: Authorization Bypass Through User-Controlled Key in FlowiseAI Flowise
Description
Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.
CVSS v3.1
Score 7.1high
Affected software
FlowiseAI
Flowise
pkg:github/flowiseai/FlowiseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91933 is an authorization bypass vulnerability in Flowise before version 3.1.4. The flaw exists because the openai-realtime endpoints do not enforce workspace-level authorization checks, allowing authenticated users to supply an unscoped chatflowid to access tools belonging to other workspaces. Attackers can perform GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, potentially causing external side effects and exposing sensitive outputs.
Potential Impact
An attacker with valid authentication can bypass workspace authorization controls to access and execute tools in other users' workspaces. This can lead to unauthorized access to sensitive tool outputs and unintended external side effects caused by tool execution. The CVSS score of 7.1 (high severity) reflects the significant confidentiality and integrity impact, with limited attack complexity but requiring low privileges.
Mitigation Recommendations
A fix is available in Flowise version 3.1.4. Users should upgrade to version 3.1.4 or later to ensure workspace-level authorization checks are properly enforced in the openai-realtime endpoints. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-15T11:06:02.263Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa9651855bf5e2cf502eafb
Added to database: 09/15/2026, 15:32:40 UTC
Last enriched: 09/15/2026, 16:02:32 UTC
Last updated: 09/16/2026, 02:32:02 UTC
Views: 8
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