chatchat-space LangChain-ChatChat 0.3.1 MCP STDIO Server Configuration command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in chatchat-space LangChain-ChatChat 0.3.1. Affected is an unknown function of the component MCP STDIO Server Configuration Handler. Executing a manipulation can lead to command injection. This vulnerability is registered as CVE-2026-30617. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in chatchat-space LangChain-ChatChat 0.3.1. It has been declared as critical. This vulnerability affects some unknown functionality of the component MCP STDIO Server Configuration Handler. The manipulation with an unknown input leads to a command injection vulnerability. The CWE definition for the vulnerability is CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at ox.security. This vulnerability was named CVE-2026-30617 since 03/04/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/15/2026). This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Chat Software

Vendor

• chatchat-space

Name

• LangChain-ChatChat

Version

• 0.3.1

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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