What’s Vulnerable › Vulnerabilities

CVE-2026-91933: Flowise before 3.1.4 Authorization Bypass via openai-realtime

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-15 · updated 2026-09-17
• Weakness: CWE-639

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.

Affected products

• FlowiseAI Flowise: before 3.1.4 — fixed in 3.1.4

How to fix

Upgrade to a fixed version: FlowiseAI Flowise 3.1.4. Check the vendor advisory for mitigations.

References

• https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gggp-6qmf-xwwc
• https://www.vulncheck.com/advisories/flowise-before-3.1.4-authorization-bypass-via-openai-realtime

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