CVE-2026-46477Public exploitNetwork attack vector

Cross-workspace dataset takeover via mass assignment

Published Jun 8, 2026 · Updated Jun 8, 2026

Mass assignment in Flowise before 3.1.2 allows remote authenticated users to transfer datasets across workspace boundaries. Dataset create and update handling in packages/server/src/services/dataset/index.ts copies request-body fields onto a Dataset with Object.assign, allowing client-controlled id or workspaceId values to reach the persisted row. Exploitation requires dataset edit permission and a target workspace UUID; the transfer exposes the dataset to that workspace and removes source-workspace access.

CVSS severity7.7
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Mass assignment in Flowise before 3.1.2 allows remote authenticated users to transfer datasets across workspace boundaries. Dataset create and update handling in packages/server/src/services/dataset/index.ts copies request-body fields onto a Dataset with Object.assign, allowing client-controlled id or workspaceId values to reach the persisted row. Exploitation requires dataset edit permission and a target workspace UUID; the transfer exposes the dataset to that workspace and removes source-workspace access.

The record

CVE
CVE-2026-46477
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-915, T1537
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 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=< 3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=< 3.1.2

Published CVSS scores

7.7GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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 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 exploitPublished

Weakness, pattern, technique

CWE-915Improperly Controlled Modification of Dynamically-Determined Object Attributes
T1537Transfer Data to Cloud Account

Public exploit references

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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