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CVE-2026-90534— Flowise before 3.1.4 Cross-Workspace Credential IDOR via node-load-method

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.

FlowiseAI Flowise是FlowiseAI公司开源的一款可视化编排语言模型应用流程的工具。 FlowiseAI Flowise 3.1.3及之前版本存在授权问题漏洞，该漏洞源于POST /api/v1/node-load-method/:name端点未进行路由级权限检查，且未验证凭据的workspaceId是否属于调用者的工作区，导致低权限用户可跨工作区使用他人凭据，以混淆代理方式执行第三方提供商调用并获取提供商元数据。

CVSS 6.1 · Medium EPSS 0.37% · P29

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 2

VendorProduct Version RangeStatus
FlowiseAI Flowise < 3.1.4 affected
3.1.4 unaffected
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I. Basic Information for CVE-2026-90534

Vulnerability Information
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Vulnerability Title
Flowise before 3.1.4 Cross-Workspace Credential IDOR via node-load-method
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise is a low-code platform for building LLM applications. In versions up to and including 3.1.3, the POST /api/v1/node-load-method/:name endpoint is mounted without any route-level permission check and invokes component loadMethods with an attacker-controlled nodeName, loadMethod, inputs, and credential value. The selected credential is resolved by raw Credential.id via getCredentialData() and decrypted without verifying Credential.workspaceId against the caller's active or shared workspace, unlike other credential read paths which are workspace-scoped. As a result, an authenticated low-privilege user (or workspace API key) in one workspace can supply a credential ID owned by another workspace and cause Flowise to act as a confused deputy, performing third-party provider calls with the victim workspace's credential and returning provider metadata to the attacker. Statically identified affected load methods include Google Drive listFiles, Google Sheets listSpreadsheets, and AWS DynamoDB KV Storage listTables. The raw credential secret itself is not returned to the attacker. This issue is fixed in version 3.1.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
FlowiseAI Flowise 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FlowiseAI Flowise是FlowiseAI公司开源的一款可视化编排语言模型应用流程的工具。 FlowiseAI Flowise 3.1.3及之前版本存在授权问题漏洞，该漏洞源于POST /api/v1/node-load-method/:name端点未进行路由级权限检查，且未验证凭据的workspaceId是否属于调用者的工作区，导致低权限用户可跨工作区使用他人凭据，以混淆代理方式执行第三方提供商调用并获取提供商元数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

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

II. Public POCs for CVE-2026-90534

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III. Intelligence Information for CVE-2026-90534

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Vendor Advisories for CVE-2026-90534 (2)

Same Patch Batch · FlowiseAI · 2026-09-12 · 3 CVEs total

CVE-2026-90535 6.3 MEDIUM Flowise before 3.1.4 Denial of Service via text-to-speech/abort
CVE-2026-90533 6.0 MEDIUM Flowise before 3.1.4 Broken Access Control via organizationuser

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-639

V. Comments for CVE-2026-90534

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