CVE-2026-91933High· 7.1▾ Twilight

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

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score39/ 100 · Low

impact 39.1 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Sep 15, 2026

Updated

Sep 17, 2026

CVSS

7.1

Vendor

FlowiseAI

Product

Flowise

CWE

CWE-639

Depth score

39 · Low

EPSS

0.33% · p26

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

CISA SSVC

decided 2026-09-17

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 17.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 2 days

Sep 15, 2026Published
Disclosed via NVD
Sep 17, 2026Record revised
Last analysed / modified upstream
Sep 17, 2026EPSS first tracked
0.3%

FlowiseAI CWE-639 #nvd #cve.org

Affected

Flowise < 3.1.4

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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