PT-2026-60834

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Improper authentication and access control in the user registration and account provisioning logic allow unauthenticated attackers to create unlimited user accounts. This occurs when...

PT-2026-60868

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Improper input validation in the APIRequest component allows an attacker to write arbitrary files to unintended locations. This occurs when the Save to File feature is enabled, as...

PT-2026-60873

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description An authenticated user can execute arbitrary commands with elevated privileges on the system. This occurs due to improper validation of user-supplied input within the Python Interpreter...

PT-2026-60864

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description A remote code execution issue exists in the disk-based caching mechanism. The AsyncDiskCache class uses the unsafe pickle.loads function to deserialize cached objects from disk without...

PT-2026-60863

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Authenticated users can override component parameters at runtime via the API. This is caused by a flaw in the parameter filtering mechanism within the apply tweaks function...

PT-2026-60858

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description An authenticated attacker can create a malicious flow that points to a URL under their control. By returning a specially crafted Content-Disposition header, such as...

PT-2026-60860

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Remote code execution is possible due to incomplete validation enforcement on MCP server configuration files. Recommendations Update IBM Langflow OSS to a version later than 1.10.0...

PT-2026-60839

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Improper authentication in the '/api/v1/login/auto login' endpoint allows remote attackers to gain unauthorized administrative access. When the AUTO LOGIN configuration is enabled, whi...

PT-2026-60878

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description An authenticated attacker can exploit the SaveToFile component to read and modify files uploaded by other users by specifying absolute paths to victim storage locations. When using...

PT-2026-60867

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Authenticated users can escalate their privileges to superuser by directly manipulating the database. This allows for the execution of arbitrary system commands, potentially leading to...

Exploit for Eval Injection in Langflow

CVE-2026-33017 - Langflow RCE Vulnerability xpl0ited by infr...

Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

Security Bulletin: Python Interpreter Sandbox Bypass Leading to Sensitive Data Exposure

Summary The Python Interpreter component and legacy Python REPL Tool component provided flow and agent authors the ability to execute Python code within a scoped globals environment restricted to an operator-configured import allow-list and curated safe builtins. An attacker who could provide inp...

PYSEC-2026-2568 Langflow: Cleartext Storage of Authentication Settings in Project Creation Endpoint

A security vulnerability has been detected in langflow-ai langflow up to 1.8.3. The affected element is the function createproject/encryptauthsettings of the file src/backend/base/Langflow/api/v1/projects.py of the component Project Creation Endpoint. Such manipulation of the argument authsetting...

PYSEC-2026-2572 Langflow: DoS Through Lack of File Size Restriction via Deprecated Unauthenticated File Upload API

A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function createuploadfile of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack...

PYSEC-2026-2565 Langflow has an Information Leak through Incomplete API Key Redaction

A weakness has been identified in langflow-ai langflow up to 1.8.3. Impacted is the function removeapikeys/hasapiterms of the file src/backend/base/langflow/api/utils/core.py of the component Flow Using API. This manipulation causes unprotected storage of credentials. The attack can be initiated...

PYSEC-2026-2569 Langflow vulnerable to injection

A vulnerability was detected in langflow-ai langflow up to 1.8.3. The impacted element is the function getclientip/installmcpconfig of the file src/backend/base/langflow/api/v1/mcpprojects.py of the component Model Context Protocol Configuration API. Performing a manipulation of the argument...

PYSEC-2026-2567 Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check

Vulnerability IDOR in GET/PATCH/DELETE /api/v1/flow/flowid The readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enabled, neither branch enforced an ownership chec...

PYSEC-2026-2571 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...