Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-70636— Flowise 3.1.4 Authentication Bypass via OAuth2 Credential Refresh Endpoint

Quick assessment

Affected
FlowiseAI Flowise
Exploitation
Public or AI PoC available; prioritize validation
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及之前版本存在授权问题漏洞，该漏洞源于身份验证中间件中基于前缀的白名单匹配，攻击者可通过向OAuth2凭据刷新端点发送带有尾随凭据标识符的POST请求，绕过所有身份验证和授权检查，触发对任意工作区凭据的未授权OAuth令牌轮换，可能导致依赖的OAuth集成中断。

CVSS 7.5 · High EPSS 0.37% · P31

Possible ATT&CK Techniques 1 AI

T1199 · Trusted Relationship

Affected Version Matrix 1

VendorProduct Version RangeStatus
FlowiseAI Flowise ≤ 3.1.4 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-70636

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Flowise 3.1.4 Authentication Bypass via OAuth2 Credential Refresh Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise through 3.1.4 contains an authentication bypass vulnerability that allows unauthenticated attackers to access the OAuth2 credential refresh endpoint by exploiting prefix-based whitelist matching in the authentication middleware defined in packages/server/src/utils/constants.ts. Attackers can send a POST request to the oauth2-credential refresh route with a trailing credential identifier to bypass all authentication and authorization checks, triggering unauthorized OAuth token rotation against credentials belonging to any workspace and potentially disrupting dependent OAuth integrations. This is a bypass of CVE-2026-41273.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A: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及之前版本存在授权问题漏洞，该漏洞源于身份验证中间件中基于前缀的白名单匹配，攻击者可通过向OAuth2凭据刷新端点发送带有尾随凭据标识符的POST请求，绕过所有身份验证和授权检查，触发对任意工作区凭据的未授权OAuth令牌轮换，可能导致依赖的OAuth集成中断。
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-2026-70636

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6484 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-70636

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-70636 (2)

Security Blog Posts for CVE-2026-70636 (1)

Same Patch Batch · FlowiseAI · 2026-08-06 · 3 CVEs total

CVE-2026-67622 9.9 CRITICAL Flowise 3.1.4 IDOR in OpenAI Assistants Integration
CVE-2026-67621 7.6 HIGH Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-70636

No comments yet

Leave a comment