Security Bulletin: Path Traversal Vulnerability in File Component Leading to Arbitrary File Read and Authentication Bypass

Summary A path traversal vulnerability existed in the File component's tar archive extraction functionality. An authenticated user could upload a specially crafted tar archive containing symbolic links to read arbitrary files accessible to the application process. The vulnerability allowed an...

Security Bulletin: MCP Server Configuration Validator Bypass via File Upload API

Summary A validation bypass vulnerability existed in the File Manager API that could allow an authenticated attacker to upload malicious MCP server configurations. The file upload endpoint accepted mcpservers.json files without invoking the MCPServerConfig validator, while the structured MCP API...

Security Bulletin: Unauthenticated User Registration Could Lead to Remote Code Execution

Summary An attacker could create accounts on an exposed instance without authentication through the user registration API. If an operator had configured newly created accounts to be active immediately, the attacker could then log in as that new user and reach code-execution functionality, which...

Security Bulletin: Arbitrary Code Execution in Python Interpreter Component

Summary A vulnerability in the Python Interpreter component allowed authenticated users to execute arbitrary Python code and escalate privileges to superuser level. An attacker with valid credentials could bypass security controls through the PythonREPLComponent, directly access the database, and...

Security Bulletin: Path Traversal in APIRequest Component via Content-Disposition Header

Summary A path traversal vulnerability existed in the APIRequest component when the "Save to File" feature was enabled. The component extracted filenames from server-controlled Content-Disposition headers without proper sanitization, allowing an attacker-controlled HTTP response to write files to...

CVE-2026-7871 Insecure Deserialization in Redis Cache Backend

IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code with full application privileges, compromising all secrets, data, and system integrity...

CVE-2026-10561 Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection

IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise...

Security Bulletin: upload filename directly from the multipart Content-Disposition header without sanitization

Summary Langflow OSS 1.2.0 - 1.8.4 are affected by a critical arbitrary file write vulnerability in the files endpoint due to improper handling of uploaded filenames. The application extracts the filename directly from the multipart Content-Disposition header without sanitization and uses unsafe...

CVE-2026-7787

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references...

CVE-2026-7787

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references...

CVE-2026-7787 Unauthenticated Session History Access via Public Flow Execution

IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references...

Security Bulletin: Langflow OSS affected by vulnerabilies in Axios versions prior to 1.15.0

Summary Langflow OSS affected by vulnerabilies in Axios versions prior to 1.15.0 Vulnerability Details CVEID:CVE-2026-40175 DESCRIPTION: Axios is a promise based HTTP client for the browser and Node.js. Versions prior to 1.15.0 and 0.3.1 are vulnerable to a specific gadget-style attack chain in...

Security Bulletin: Langflow OSS affected by vulnerabilies in Lodash versions 4.17.23 and earlier

Summary Langflow OSS affected by vulnerabilies in Lodash versions 4.17.23 and earlier Vulnerability Details CVEID:CVE-2026-2950 DESCRIPTION: Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the .unset and .omit functions. The fix for CVE-2025-13465:...

CVE-2026-7528

IBM Langflow OSS versions 1.0.0–1.9.0 are vulnerable to an unauthenticated file upload that allows unlimited uploads via the deprecated /api/v1/upload/{flow_id} endpoint, enabling DoS through uncontrolled resource consumption and potential absolute path disclosure in API responses. The root cause...

EUVD-2026-32494

IBM Langflow OSS 1.0.0 through 1.9.1 could allow remote code execution due to improper validation of symbolic links during archive extraction...

CVE-2026-6542 Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id

IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flowid to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow...

CVE-2026-6542 Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id

IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flowid to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow...

Security Bulletin: Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id

Summary Langflow OSS is affected by an insecure direct object reference vulnerability in its Monitor API due to missing authorization checks. Although these endpoints require authentication, they fail to verify ownership of the provided flowid, allowing any authenticated user to access or...