EUVD-2026-22941Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
LangChain-ChatChat 0.3.1 contains a remote code execution vulnerability in its MCP STDIO server configuration and execution handling. A remote attacker can access the publicly exposed MCP management interface and configure an MCP STDIO server with attacker-controlled commands and arguments. When the MCP server is started and MCP is enabled for agent execution, subsequent agent activity triggers execution of arbitrary commands on the server. Successful exploitation allows arbitrary command execution within the context of the LangChain-ChatChat service.
AnalysisAI
Remote code execution in LangChain-ChatChat 0.3.1 allows unauthenticated remote attackers to execute arbitrary commands by injecting malicious commands into the MCP STDIO server configuration via the exposed management interface. When the MCP feature is enabled for agent execution, subsequent agent activity triggers the configured command, leading to full code execution in the service context. No active exploitation has been reported, and EPSS indicates a low probability of widespread attack.
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External POC / Exploit Code
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