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CVE-2026-90533— Flowise before 3.1.4 Broken Access Control via organizationuser

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 3.1.4之前版本存在授权问题漏洞，该漏洞源于GET /api/v1/organizationuser接口访问控制不当，允许任何经过身份验证的组织成员检索组织所有者的完整用户记录（包括bcrypt密码哈希和临时令牌），攻击者可通过任意用户ID查询获取凭据哈希进行离线破解，导致最高权限账户被接管。

CVSS 6.0 · Medium EPSS 0.34% · P25

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-2026-90533

Vulnerability Information
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Vulnerability Title
Flowise before 3.1.4 Broken Access Control via organizationuser
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
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 3.1.4之前版本存在授权问题漏洞，该漏洞源于GET /api/v1/organizationuser接口访问控制不当，允许任何经过身份验证的组织成员检索组织所有者的完整用户记录（包括bcrypt密码哈希和临时令牌），攻击者可通过任意用户ID查询获取凭据哈希进行离线破解，导致最高权限账户被接管。
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-2026-90533

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III. Intelligence Information for CVE-2026-90533

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Vendor Advisories for CVE-2026-90533 (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-2026-90534 6.1 MEDIUM Flowise before 3.1.4 Cross-Workspace Credential IDOR via node-load-method

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-862

V. Comments for CVE-2026-90533

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