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CVE-2026-91930— Flowise before 3.1.4 Cross-Tenant Organization Admin Takeover

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flowise 3.1.4 之前的版本未能将企业组织和工作区成员资格 API 限制在调用者所属的租户范围内，使得经过身份验证的用户可以提供任意的组织 ID。攻击者可以利用组织和用户端点以及工作区端点中不充分的租户隔离缺陷，将自身添加为组织所有者、创建工作区，并获取受害组织的行政访问权限。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1079.003
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I. Basic Information for CVE-2026-91930

Vulnerability Information
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Vulnerability Title
Flowise before 3.1.4 Cross-Tenant Organization Admin Takeover
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise before 3.1.4 fails to scope enterprise organization and workspace membership APIs to the caller's tenant, allowing authenticated users to supply arbitrary organization IDs. Attackers can add themselves as organization owners, create workspaces, and gain administrative access to victim organizations by exploiting insufficient tenant isolation in the organizationuser and workspace endpoints.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FlowiseAI Flowise 0 ~ 3.1.4 -

II. Public POCs for CVE-2026-91930

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III. Intelligence Information for CVE-2026-91930

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Vendor Advisories for CVE-2026-91930 (2)

Same Patch Batch · FlowiseAI · 2026-09-15 · 10 CVEs total

CVE-2026-91934 8.8 HIGH Flowise before 3.1.4 Remote Code Execution via SQL Database Chain
CVE-2026-91931 8.5 HIGH Flowise before 3.1.4 Remote Code Execution via Custom MCP npx
CVE-2026-91932 8.5 HIGH Flowise before 3.1.4 Remote Code Execution via cwd Parameter
CVE-2026-91935 8.3 HIGH Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes
CVE-2026-91937 7.5 HIGH Flowise before 3.1.4 NoSQL Injection via sessionId
CVE-2026-91933 7.1 HIGH Flowise before 3.1.4 Authorization Bypass via openai-realtime
CVE-2026-91929 7.1 HIGH Flowise before 3.1.4 Cross-Tenant Authorization Bypass
CVE-2026-91938 7.1 HIGH Flowise before 3.1.4 Server-Side Request Forgery via document loaders
CVE-2026-91936 6.8 MEDIUM Flowise before 3.1.4 Script Injection via Docker Workflows

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-266

V. Comments for CVE-2026-91930

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