mcp-stdio-shellguard

Part of theStudioMeyer MCP Stack — Built in Mallorca 🌴 · ⭐ if you use it mcp-stdio-shellguard Defense-in-depth bundle for MCP stdio servers. Wraps childprocess.exec/spawn with allowlist + sandbox + replay-detection, plus an AST audit CLI mcp-shellguard-audit that scans MCP server sources for...

mcpshield

mcpshield A drop-in fix for the unpatched MCP STDIO command-injection flaw the CVE-2026-30623 family, disclosed by OX Security in April 2026 as "by design" -- no SDK patch is coming. Import one line, and every stdio MCP server your Python app launches gets its command/args/env validated before th...

CVE-2026-42271-PoC

CVE-2026-42271 — LiteLLM Authenticated Command Injection via MCP stdio Test Endpoints LiteLLM POST /mcp-rest/test/connection & POST /mcp-rest/test/tools/list — Authenticated command injection via MCP stdio transport. Any valid API key can execute arbitrary OS commands as root in default Docker...

CVE-2026-12940-Langflow-Unauth-RCE

CVE-2026-12940 — Langflow OSS ≤ 1.10.1 Unauthenticated RCE MCP stdio env-var injection Unauthenticated remote code execution in Langflow OSS through 1.10.1. The environment-variable blocklist that guards MCP stdio server configuration DANGEROUSENVVARS omits SHELLOPTS, BASHOPTS and PS4. Because th...

CVE-2026-114612

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted...

EUVD-2026-108277

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted...

CVE-2026-114612

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted...

CVE-2026-114612 LiteLLM: Privilege Escalation to Proxy Admin via Cross-Domain Reuse of the Salt Key

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted...

CVE-2026-114612

The LiteLLM AI Gateway proxy (versions 1.87.0 through 1.100.4 , 1.101.3 , 1.102.2 , 1.103.1 , and 1.104.0-rc.2 ) is vulnerable to privilege escalation . The root cause is the reuse of a single cryptographic context for both at-rest secrets and session tokens. An authenticated internal user can cr...

CVE-2026-114612 LiteLLM: Privilege Escalation to Proxy Admin via Cross-Domain Reuse of the Salt Key

LiteLLM is a proxy server AI Gateway to call LLM APIs in OpenAI or native format. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted...

PT-2026-121505

Name of the Vulnerable Software and Affected Versions LiteLLM versions 1.87.0 through 1.100.3 LiteLLM versions 1.101.0 through 1.101.2 LiteLLM versions 1.102.0 through 1.102.1 LiteLLM versions 1.103.0 LiteLLM versions 1.104.0-rc.0 through 1.104.0-rc.1 Description LiteLLM reuses a single...

PYSEC-2026-4241 Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Summary Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to reach the MCP server settings "Settings → MCP Servers → Add MCP Server",...

PYSEC-2026-4237 Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Summary Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to reach the MCP server settings "Settings → MCP Servers → Add MCP Server",...

PYSEC-2026-4239 Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Summary Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to reach the MCP server settings "Settings → MCP Servers → Add MCP Server",...

GHSA-W794-RJ3P-XV45 Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Summary Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to reach the MCP server settings "Settings → MCP Servers → Add MCP Server",...

Langflow: OS command injection (RCE) via arbitrary command in MCP stdio server configuration

Summary Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to reach the MCP server settings "Settings → MCP Servers → Add MCP Server",...

EUVD-2026-92788

Langflow: OS command injection RCE via arbitrary command in MCP stdio server configuration...

CVE-2026-105697

Langflow is a tool for building and deploying AI-powered agents and workflows. Before Langflow 1.10.3, the MCP stdio transport launched whatever command / args a user put in an MCP server configuration, with no allowlist and before 1.10.3 wrapped in bash -c "exec command ...". Any user able to...

CVE-2026-105740 Langflow: Authenticated RCE via MCP Stdio transport allows any user to execute arbitrary OS commands on the server

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, any authenticated Langflow user can achieve Remote Code Execution RCE on the server by adding an MCP server with the "Stdio" transport. The user-supplied command field is passed directly to bash -c "exe...

CVE-2026-105740 Langflow: Authenticated RCE via MCP Stdio transport allows any user to execute arbitrary OS commands on the server

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, any authenticated Langflow user can achieve Remote Code Execution RCE on the server by adding an MCP server with the "Stdio" transport. The user-supplied command field is passed directly to bash -c "exe...