CVE-2026-17623 Langflow is affected OS Command Injection in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of the command field in MCP server configurations...

CVE-2026-17630 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to execute arbitrary code due to improper validation of configuration parameters...

CVE-2026-17630 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to execute arbitrary code due to improper validation of configuration parameters...

CVE-2026-17630

Langflow OSS 1.0.0–1.10.3 is affected by CVE-2026-17630, where improper validation of configuration parameters could allow a remote attacker to execute arbitrary code. The issue pertains to Langflow OSS components handling MCP/configuration inputs, enabling code execution with network access and ...

CVE-2026-17626 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 Langflow could allow an authenticated attacker to read, modify, or expose sensitive host files via Docker-based MCP servers due to incomplete filtering of dangerous Docker volume-mount and device-mapping arguments...

CVE-2026-17626

CVE-2026-17626 affects IBM Langflow OSS versions 1.0.0–1.10.3. An authenticated attacker could read, modify, or expose sensitive host files through Docker-based MCP servers due to incomplete filtering of dangerous docker volume-mount and device-mapping arguments. The IBM/NVD entries describe the ...

CVE-2026-8446 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol MCP composer endpoint when mcpcomposerenabled=true default and projects are configured with authtype=oauth...

EUVD-2026-53465

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol MCP composer endpoint when mcpcomposerenabled=true default and projects are configured with authtype=oauth...

CVE-2026-8446 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol MCP composer endpoint when mcpcomposerenabled=true default and projects are configured with authtype=oauth...

CVE-2026-8446

Langflow OSS versions 1.0.0–1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects use auth_type=oauth. The issue, tracked under CVE-2026-8446, enables bypassing authentication for the MCP c...

CVE-2026-7646

CVE-2026-7646 affects IBM Langflow OSS 1.0.0–1.10.3. Affected component: Model Context Protocol (MCP) resources/read handling. Root cause: URL-encoded path traversal in the filename enables a crafted MCP request to read arbitrary server files (including other users’ documents, JWT signing secret,...

CVE-2026-7646 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP resources/read request with a URL-encoded path...

CVE-2026-7646 Langflow is affected by security vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 allows users to read arbitrary files from the server filesystem, including other users' uploaded documents, the JWT signing secret, the SQLite database, and process environment variables, by sending a crafted MCP resources/read request with a URL-encoded path...

CVE-2026-9077 Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Protocol features

IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system...

CVE-2026-8446: Missing Authentication for Critical Function

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol MCP composer endpoint when mcpcomposerenabled=true default and projects are configured with authtype=oauth...

PYSEC-2026-3549 AWS API MCP Server Security Policy Bypass via Startup Initialization Failure

Summary The AWS API MCP Server is an open source Model Context Protocol MCP server that enables AI assistants to interact with AWS services and resources through AWS CLI commands. It provides programmatic access to manage your AWS infrastructure while maintaining proper security controls. It...

Exploit for CVE-2026-12940

CVE-2026-12940 — Langflow OSS ≤ 1.10.1 Unauthenticated RCE MC...

Exposed by Design: A Dynamic Security Assessment of Internet-Facing MCP Servers at Scale

The Model Context Protocol MCP has seen rapid adoption since its November 2024 launch, with over 21,000 server instances detectable on the public internet. We present the first dynamic behavioral security assessment of internet-facing MCP servers, combining passive discovery across eleven data...

CVE-2026-12940

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...

CVE-2026-12940

IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP Model Context Protocol stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGEROUSENVVARS blocklist fails to include...