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

Goal: 1000 CNY · Raised: 1325 CNY

100%
Buy Us a Coffee

CVE-2026-42863— Flowise: Mass Assignment in Chatflow Update Endpoint Allows Cross-Workspace AgentFlow Reassignment

AI Predicted 6.5 Difficulty: Easy EPSS 0.23% · P13

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProductVersion RangeStatus
FlowiseAIFlowise< 3.1.2affected
Get alerts for future matching vulnerabilitiesLog in to subscribe

I. Basic Information for CVE-2026-42863

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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: Mass Assignment in Chatflow Update Endpoint Allows Cross-Workspace AgentFlow Reassignment
Source: NVD (National Vulnerability Database)
Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, a mass assignment vulnerability exists in the chatflow update endpoint of FlowiseAI. The endpoint allows clients to modify server-controlled properties such as deployed, isPublic, workspaceId, createdDate, and updatedDate when updating a chatflow object. Due to missing server-side validation and authorization checks, an authenticated user can manipulate internal attributes of a chatflow and reassign it to another workspace. This allows cross-workspace resource reassignment and unauthorized modification of deployment and visibility settings. This issue has been patched in version 3.1.2.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
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 3.1.2之前版本存在访问控制错误漏洞，该漏洞源于聊天流更新端点缺少服务器端验证和授权检查，可能导致批量赋值漏洞，允许经过身份验证的用户操纵聊天流的内部属性并将其重新分配到另一个工作区，导致跨工作区资源重新分配以及部署和可见性设置的未授权修改。
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

VendorProductAffected VersionsCPESubscribe
FlowiseAIFlowise < 3.1.2 -

II. Public POCs for CVE-2026-42863

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-42863

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-42863 (1)

Vendor Pages for CVE-2026-42863 (1)

Same Patch Batch · FlowiseAI · 2026-06-08 · 14 CVEs total

CVE-2026-42862Flowise: Mass Assignment in Tool Update Endpoint Allows Cross-Workspace Resource Reassignm
CVE-2026-42861Flowise: Mass Assignment in Variable Update Endpoint Allows Cross-Workspace Resource Reass
CVE-2026-46476Flowise: CustomTemplate create+update mass-assignment allows cross-workspace template take
CVE-2026-46479Flowise: Evaluation create+update mass-assignment allows cross-workspace evaluation takeov
CVE-2026-46475Flowise: Assistant create+update mass-assignment allows cross-workspace assistant takeover
CVE-2026-46444Flowise: Vector Store No Permission Checks
CVE-2026-46478Flowise: DatasetRow create+update mass-assignment allows cross-workspace row takeover
CVE-2026-46442Flowise: Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox E
CVE-2026-46477Flowise: Dataset create+update mass-assignment allows cross-workspace dataset takeover
CVE-2026-46480Flowise: Evaluator create+update mass-assignment allows cross-workspace evaluator takeover
CVE-2026-46440Flowise: Basic Auth Credentials Exposed via API
CVE-2026-46443Flowise: Credential Data Leak
CVE-2026-46441Flowise: Mass Assignment in Assistant Update Endpoint Allows Cross-Workspace Resource Reas

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: FlowiseAI
Same weakness: CWE-284

V. Comments for CVE-2026-42863

No comments yet

Leave a comment