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CVE-2026-69250— Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration

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公司开源的一个用于轻松构建 LLM 应用程序的工具。 FlowiseAI Flowise 3.1.3之前版本存在授权问题漏洞，该漏洞源于OAuth2令牌刷新端点/api/v1/oauth2-credential/refresh/:credentialId缺少身份验证和SSRF防护，未经身份验证的攻击者可利用该端点向攻击者控制的服务器发起服务端请求并获取敏感信息。

CVSS 8.5 · High EPSS 0.57% · P45

Affected Version Matrix 1

VendorProduct Version RangeStatus
FlowiseAI Flowise < 3.1.3 affected
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I. Basic Information for CVE-2026-69250

Vulnerability Information
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Vulnerability Title
Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
Source: CVE Program / CVE List V5
Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/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公司开源的一个用于轻松构建 LLM 应用程序的工具。 FlowiseAI Flowise 3.1.3之前版本存在授权问题漏洞，该漏洞源于OAuth2令牌刷新端点/api/v1/oauth2-credential/refresh/:credentialId缺少身份验证和SSRF防护，未经身份验证的攻击者可利用该端点向攻击者控制的服务器发起服务端请求并获取敏感信息。
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 < 3.1.3 -

II. Public POCs for CVE-2026-69250

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Qwen3.6-35B-A3B · 7072 chars
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III. Intelligence Information for CVE-2026-69250

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Vendor Advisories for CVE-2026-69250 (1)

Vendor Pages for CVE-2026-69250 (1)

Same Patch Batch · FlowiseAI · 2026-08-04 · 22 CVEs total

CVE-2026-70477 9.5 CRITICAL Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
CVE-2026-70470 9.5 CRITICAL Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
CVE-2026-69254 9.4 CRITICAL Flowise: RCE via NodeVM Sandbox Escape in executeJavaScriptCode() nodeVMOptions Override
CVE-2026-69264 9.4 CRITICAL Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python sour
CVE-2026-69259 9.4 CRITICAL Flowise RCE via SQLite Record Manager Node
CVE-2026-69256 9.4 CRITICAL Flowise: Remote Code Execution Vulnerability in CSVAgent
CVE-2026-70478 9.2 CRITICAL Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables tok
CVE-2026-69255 9.2 CRITICAL Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
CVE-2026-69253 9.0 CRITICAL Flowise Sandbox Escape to RCE
CVE-2026-69251 9.0 CRITICAL Flowise RCE via TypeORM DataSource
CVE-2026-69258 8.8 HIGH Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overr
CVE-2026-69263 8.7 HIGH Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable bloc
CVE-2026-70473 8.3 HIGH Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wi
CVE-2026-70476 8.3 HIGH Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billin
CVE-2026-69257 7.6 HIGH Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
CVE-2026-70474 7.6 HIGH Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
CVE-2026-69252 7.2 HIGH Flowise: Missing authorization on `/api/v1/files` allows low-privileged API keys to list a
CVE-2026-69262 7.1 HIGH Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentfl
CVE-2026-70471 7.1 HIGH Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
CVE-2026-70472 7.1 HIGH Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store

Showing top 20 of 22 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-69250

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