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CVE-2026-22252— LibreChat MCP Stdio Remote Command Execution

Quick assessment

Affected
danny-avila LibreChat
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LibreChat是LibreChat开源的一个免费、高度可定制的统一 AI 对话平台，能够在一个界面中聚合并运行来自任意厂商的大模型。 LibreChat v0.8.2-rc2之前版本存在授权问题漏洞，该漏洞源于MCP stdio传输接受任意命令且未经验证，可能导致任何经过身份验证的用户通过单个API请求以root身份在容器内执行shell命令。

CVSS 9.1 · Critical EPSS 4.22% · P91

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-22252

Vulnerability Information
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Vulnerability Title
LibreChat MCP Stdio Remote Command Execution
Source: CVE Program / CVE List V5
Vulnerability Description
LibreChat is a ChatGPT clone with additional features. Prior to v0.8.2-rc2, LibreChat's MCP stdio transport accepts arbitrary commands without validation, allowing any authenticated user to execute shell commands as root inside the container through a single API request. This vulnerability is fixed in v0.8.2-rc2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
LibreChat 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibreChat是LibreChat开源的一个免费、高度可定制的统一 AI 对话平台，能够在一个界面中聚合并运行来自任意厂商的大模型。 LibreChat v0.8.2-rc2之前版本存在授权问题漏洞，该漏洞源于MCP stdio传输接受任意命令且未经验证，可能导致任何经过身份验证的用户通过单个API请求以root身份在容器内执行shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
danny-avila LibreChat < v0.8.2-rc2 -

II. Public POCs for CVE-2026-22252

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7720 chars
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III. Intelligence Information for CVE-2026-22252

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Vendor Advisories for CVE-2026-22252 (1)

IV. Related Vulnerabilities

Same product: LibreChat
Same vendor: danny-avila
Same weakness: CWE-285

V. Comments for CVE-2026-22252

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