Langflow code issues and vulnerabilities

Langflow is an open-source visualization framework developed by Langflow for building multi-agent and RAG applications. Langflow has code-related vulnerabilities; these vulnerabilities stem from the lack of validation for data provided by the disk caching service, which may lead to the...

VulnCheck KEV: CVE-2025-34291

Langflow contains an origin validation error vulnerability in which an overly permissive CORS configuration combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh...

Langflow security vulnerabilities

Langflow is an open-source visualization framework developed by Langflow for building multi-agent and RAG applications. Langflow has a security vulnerability, which stems from the lack of validation for strings provided by users in the implementation of the evalcustomcomponentcode function. This...

CVE-2026-0768: Improper Control of Generation of Code

Langflow code Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the code...

PT-2026-2001

Name of the Vulnerable Software and Affected Versions Langflow affected versions not specified Description A flaw exists in Langflow related to the handling of Python function components, potentially allowing remote attackers to execute arbitrary code on affected systems. An attacker may be able ...

PT-2026-1999

Name of the Vulnerable Software and Affected Versions Langflow affected versions not specified Description Remote attackers can execute arbitrary code on affected installations without requiring authentication. The issue stems from a lack of proper validation of a user-supplied string within the...

PT-2026-2000

Name of the Vulnerable Software and Affected Versions Langflow versions prior to 1.3.0 Description Remote attackers can execute arbitrary code on affected installations without requiring authentication. The issue stems from the inclusion of a resource from an untrusted control sphere within the...

(0Day) Langflow Disk Cache Deserialization of Untrusted Data Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is required to exploit this vulnerability. The specific flaw exists within the disk cache service. The issue results from the lack of proper validation of user-supplied data,...

(0Day) Langflow code Code Injection Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the code parameter provided to the validate endpoint. The issue results from th...

PT-2026-2002

Name of the Vulnerable Software and Affected Versions Langflow affected versions not specified Description A flaw exists in the disk cache service of Langflow that allows remote attackers to execute arbitrary code on affected installations. Authentication is required for exploitation. The issue...

(0Day) Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of evalcustomcomponentcode function. The issue results from the lack of prop...

(0Day) Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of the execglobals parameter provided to the validate endpoint. The issue results...

(0Day) Langflow PythonFunction Code Injection Remote Code Execution Vulnerability

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Attack vectors and exploitability will vary depending on the configuration of the product. The specific flaw exists within the handling of Python function components. Depending upon product...

PT-2026-1998

Name of the Vulnerable Software and Affected Versions Langflow versions 1.4.2 and earlier Description An unauthenticated remote code execution flaw exists in the custom component editor's code validation logic. The application fails to properly validate user-supplied strings provided to the...

Improper Authentication

Langflow is vulnerable to Improper Authentication. The vulnerability is due to missing authentication and authorization checks on critical API endpoints, which allows an unauthenticated attacker to access sensitive user data and perform unauthorized destructive operations...

CVE-2026-21445

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories...

Missing Authentication for Critical Function

Overview Affected versions of this package are vulnerable to Missing Authentication for Critical Function on the critical API endpoints messages, transactions, and session, handling sensitive user data and system operations. An unauthenticated attacker can access confidential conversation data an...

Langflow Missing Authentication on Critical API Endpoints

Summary Multiple critical API endpoints in Langflow are missing authentication controls, allowing any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal dat...

GHSA-C5CP-VX83-JHQX Langflow Missing Authentication on Critical API Endpoints

Summary Multiple critical API endpoints in Langflow are missing authentication controls, allowing any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal dat...

CVE-2026-21445

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories...