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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-41273— Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow

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是FlowiseAI开源的一个用于轻松构建 LLM 应用程序的工具。 Flowise 3.1.0之前版本存在访问控制错误漏洞，该漏洞源于认证绕过漏洞，允许未经身份验证的攻击者获取与公共聊天流关联的OAuth 2.0访问令牌。

AI Predicted 9.1 Difficulty: Easy EPSS 0.31% · P24

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-41273

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow
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 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens associated with a public chatflow. By accessing a public chatflow configuration endpoint, an attacker can retrieve internal workflow data, including OAuth credential identifiers, which can then be used to refresh and obtain valid OAuth 2.0 access tokens without authentication. This vulnerability is fixed in 3.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Flowise 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flowise是FlowiseAI开源的一个用于轻松构建 LLM 应用程序的工具。 Flowise 3.1.0之前版本存在访问控制错误漏洞，该漏洞源于认证绕过漏洞，允许未经身份验证的攻击者获取与公共聊天流关联的OAuth 2.0访问令牌。
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 < 3.1.0 -

II. Public POCs for CVE-2026-41273

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-41273

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-41273 (1)

Same Patch Batch · FlowiseAI · 2026-04-23 · 18 CVEs total

CVE-2026-41267 8.1 HIGH Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organizatio
CVE-2026-41272 7.1 HIGH Flowise: SSRF Protection Bypass (TOCTOU & Default Insecure)
CVE-2026-41270 7.1 HIGH Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function S
CVE-2026-41269 7.1 HIGH Flowise: File Upload Validation Bypass in createAttachment
CVE-2026-41268 Flowise: Flowise Parameter Override Bypass Remote Command Execution
CVE-2026-41274 Flowise: Cypher Injection in GraphCypherQAChain
CVE-2026-41277 Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object
CVE-2026-41264 Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
CVE-2026-41137 Flowise: Code Injection in CSVAgent leads to Authenticated RCE
CVE-2026-41138 Flowise: Remote code execution vulnerability in AirtableAgent.ts caused by lack of input v
CVE-2026-41279 Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credi
CVE-2026-41278 Flowise: Public chatflow endpoints return unsanitized flowData including plaintext API key
CVE-2026-41275 Flowise: Password Reset Link Sent Over Unsecured HTTP
CVE-2026-41265 Flowise: Airtable_Agent Code Injection Remote Code Execution Vulnerability
CVE-2026-41266 Flowise: Sensitive Data Leak in public-chatbotConfig
CVE-2026-41276 Flowise: AccountService resetPassword Authentication Bypass Vulnerability
CVE-2026-41271 Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-306