CVE-2026-91933Network attack vectorHinoki check available

Cross-workspace tool access via unscoped chatflow ID

Published Sep 15, 2026 · Updated Sep 15, 2026

Improper authorization in Flowise before 3.1.4 allows remote authenticated users to access and execute tools across workspaces. The openai-realtime controllers passed a caller-supplied chatflow ID to a service that queried ChatFlow by ID alone, while the routes omitted RBAC checks and the lookup omitted the caller's active workspace. Any authenticated account in a multi-workspace deployment can retrieve another workspace's tool definitions or invoke its tools, exposing sensitive outputs and triggering external side effects.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper authorization in Flowise before 3.1.4 allows remote authenticated users to access and execute tools across workspaces. The openai-realtime controllers passed a caller-supplied chatflow ID to a service that queried ChatFlow by ID alone, while the routes omitted RBAC checks and the lookup omitted the caller's active workspace. Any authenticated account in a multi-workspace deployment can retrieve another workspace's tool definitions or invoke its tools, exposing sensitive outputs and triggering external side effects.

The record

CVE
CVE-2026-91933
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=0 <3.1.4

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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