CVE-2026-42271-PoC

CVE-2026-42271 — Inyección de comandos autenticada en LiteLLM a través de endpoints de prueba MCP stdio LiteLLM POST /mcp-rest/test/connection y POST /mcp-rest/test/tools/list — Inyección de comandos autenticada a través del transporte MCP stdio. Cualquier clave API válida puede ejecutar comandos...

CVE-2026-90898

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

CVE-2026-90898

Bifrost (by maximhq) is vulnerable to unauthenticated remote code execution through its MCP stdio client registration endpoint. When a stdio client is registered via POST /api/mcp/client, Bifrost immediately spawns the specified command in the gateway—no MCP handshake required. By default, authen...

CVE-2026-78575

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

CVE-2026-78575 Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration...

CVE-2026-78575

IBM Langflow OSS 1.0.0–1.11.5 is vulnerable to OS command injection (CWE-78) in the MCP stdio server configuration , allowing a remote authenticated attacker to execute arbitrary commands. The root cause involves two gaps: the MCP stdio validator on Windows recognizes only one cmd.exe execution s...

mcp-stdio-shellguard

StudioMeyer MCP Stack 的一部分 — 在马略卡岛构建 🌴 · 如果使用请⭐ mcp-stdio-shellguard 针对 MCP stdio 服务器的深度防御捆绑包。使用白名单 + 沙箱 + 重放检测包装 childprocess.exec/spawn，外加一个 AST 审计 CLI mcp-shellguard-audit，用于扫描 MCP 服务器源中未清理的 shell 调用。封堵了 Ox-Security MCP stdio-RCE 漏洞类别（200k 台易受攻击服务器，2026 年 5 月披露）。 MCP spec : 2025-06-18 SDK :...

PT-2026-89614

🚨 CVE-2026-78575 IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary commands due to improper validation of command-line arguments in the MCP stdio server configuration. 🎖@cveNotify...

Security Bulletin: Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards

Summary Langflow uses a code security scanner and component-level execution policies to restrict server-side code execution to authorized users and contexts. The agentic assistant code scanner employs an incomplete denylist omitting process-spawning primitives and contains a logic error where...

mcpshield

mcpshield Un parche de integración directa para la vulnerabilidad sin parchear de inyección de comandos en MCP STDIO la familia CVE-2026-30623, divulgada por OX Security en abril de 2026 como "por diseño" -- no llegará ningún parche del SDK. Importa una línea, y cada servidor MCP stdio que lance ...

CVE-2026-12940-Langflow-Unauth-RCE

CVE-2026-12940 — Langflow OSS ≤ 1.10.1 RCE no autenticado inyección de variables de entorno en MCP stdio Ejecución remota de código no autenticada en Langflow OSS hasta 1.10.1. La lista negra de variables de entorno que protege la configuración del servidor MCP stdio DANGEROUSENVVARS omite...

GHSA-W3FX-MC44-MF6J Chainlit has command injection via MCP stdio transport that allows unauthenticated remote code execution

Am I affected? Only if your deployment sets features.mcp.enabled = true in .chainlit/config.toml. MCP has been disabled by default since v2.7.0, so most Chainlit deployments are not affected. No authentication is required: /mcp is reachable by any client that can open a session. Summary When MCP ...

CVE-2026-45018 Chainlit: Command injection via MCP stdio transport allows unauthenticated remote code execution

Chainlit is a Python framework for building production-ready conversational AI applications. From 2.4.0rc0 until 2.12.0, Chainlit deployments with features.mcp.enabled set to true in .chainlit/config.toml expose the POST /mcp endpoint without requiring authentication. For stdio transport, the...

CVE-2026-45018

Chainlit (Python framework for conversational AI applications) is vulnerable to command injection via its MCP stdio transport in versions 2.4.0rc0 through 2.12.0 . When features.mcp.enabled is set to true, the POST /mcp endpoint is exposed without authentication . The validate_mcp_command() funct...

IBM Langflow OSS command injection vulnerability

IBM Langflow OSS is an open-source low-code visualization AI workflow building tool developed by IBM. It enables developers to quickly build, deploy, and iterate AI agents and RAG applications through drag-and-drop components. Additionally, it supports deep customization using Python to integrate...

CVE-2026-44450 Lumiverse: RCE via MCP stdio argument injection

Lumiverse is a full-featured AI chat application. Prior to 0.9.7, the MCP server creation endpoint validates the command field against an allowlist of binary names but forwards the args array to the child process without any validation. Every binary on the allowlist accepts an inline-code executi...

GHSA-P3M6-JR2H-HHXJ Duplicate Advisory: OpenClaw: MCP stdio server env could load dangerous startup variables from workspace config

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-mj59-h3q9-ghfh. This link is maintained to preserve external references. Original Description OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server...

CVE-2026-44995

OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODEOPTIONS, LDPRELOAD, or BASHENV to spawne...

CVE-2026-44995 OpenClaw < 2026.4.20 - Arbitrary Code Execution via MCP stdio Environment Variables

OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODEOPTIONS, LDPRELOAD, or BASHENV to spawne...

CVE-2026-44995 OpenClaw < 2026.4.20 - Arbitrary Code Execution via MCP stdio Environment Variables

OpenClaw before 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables like NODEOPTIONS, LDPRELOAD, or BASHENV to spawne...