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...

CVE-2026-42271-PoC

CVE-2026-42271 — Injeção de Comando Autenticada no LiteLLM via Endpoints de Teste MCP stdio LiteLLM POST /mcp-rest/test/connection & POST /mcp-rest/test/tools/list — Injeção de comando autenticada via transporte MCP stdio. Qualquer chave de API válida pode executar comandos arbitrários do SO como...

mcpshield

mcpshield Una correzione drop-in per la falla di command-injection negli MCP stdio non ancora corretta famiglia CVE-2026-30623, segnalata da OX Security nell'aprile 2026 come "by design" -- nessuna patch SDK in arrivo. Basta importare una riga e ogni server MCP stdio avviato dalla tua app Python...

CVE-2026-12940-Langflow-Unauth-RCE

CVE-2026-12940 — Langflow OSS ≤ 1.10.1 RCE non autenticata iniezione di variabili d'ambiente MCP stdio Esecuzione remota di codice non autenticata in Langflow OSS fino alla 1.10.1. La blocklist delle variabili d'ambiente che protegge la configurazione dei server MCP stdio DANGEROUSENVVARS omette...

mcp-stdio-shellguard

Parte delloStudioMeyer MCP Stack — Realizzato a Maiorca 🌴 · ⭐ se lo usi mcp-stdio-shellguard Bundle difesa-in-profondità per server MCP stdio. Avvolge childprocess.exec/spawn con lista consentita + sandbox + rilevamento replay, più una CLI di audit AST mcp-shellguard-audit che scansiona le sorgen...

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...

CVE-2026-40933

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe serialization of stdio commands in the MCP adapter, an authenticated attacker can add an MCP stdio server with an arbitrary command, achieving command execution. The vulnerabilit...

LangChain-Chatchat 安全漏洞

LangChain-Chatchat is a chatbot software developed based on the LangChain framework, open-sourced by Chatchat-Space. Version 0.3.1 of LangChain-Chatchat contains a security vulnerability. This vulnerability stems from improper configuration and execution of the MCP STDIO server, which may allow...

CVE-2026-30616

Jaaz 1.0.30 contains a remote code execution vulnerability in its MCP STDIO command execution handling. A remote attacker can send crafted network requests to the network-accessible Jaaz application, causing attacker-controlled commands to be executed on the server. Successful exploitation result...

CVE-2026-39417 MaxKB: RCE via MCP stdio command injection in workflow engine

MaxKB is an open-source AI assistant for enterprise. Versions 2.7.1 and below contain an incomplete fix for CVE-2025-53928, where a Remote Code Execution vulnerability still exists in the MCP node of the workflow engine. MaxKB only restricts the referencing code path loading MCP config from the...

GO-2026-4645 WeKnora has Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation in github.com/Tencent/WeKnora

WeKnora has Remote Code Execution RCE via Command Injection in MCP Stdio Configuration Validation in github.com/Tencent/WeKnora...

CVE-2026-30861

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution RCE vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user...

CVE-2026-30861 WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution RCE vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user...

CVE-2026-30861 WeKnora: Remote Code Execution (RCE) via Command Injection in MCP Stdio Configuration Validation

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution RCE vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user...