CVE-2026-91929Network attack vectorHinoki check available

Cross-tenant resource modification via missing ownership checks

Published Sep 15, 2026 · Updated Sep 15, 2026

Broken access control in Flowise before 3.1.4 allows remote authenticated users to modify resources across Enterprise tenants. Enterprise organization-user, workspace-user, workspace, login-method, and role handlers trusted request-supplied identifiers without consistently binding them to the caller's active organization and workspace. Enterprise access is required; exploitation enables cross-organization invitations and role changes, unauthorized workspace deletion, and access to stored SSO secrets.

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

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Broken access control in Flowise before 3.1.4 allows remote authenticated users to modify resources across Enterprise tenants. Enterprise organization-user, workspace-user, workspace, login-method, and role handlers trusted request-supplied identifiers without consistently binding them to the caller's active organization and workspace. Enterprise access is required; exploitation enables cross-organization invitations and role changes, unauthorized workspace deletion, and access to stored SSO secrets.

The record

CVE
CVE-2026-91929
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
T1098
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1098Account Manipulation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo