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CVE-2026-32625— LibreChat Exfiltrates Server Secrets via MCP Server URL Injection

CVSS 9.6 · Critical
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I. Basic Information for CVE-2026-32625

Vulnerability Information
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Vulnerability Title
LibreChat Exfiltrates Server Secrets via MCP Server URL Injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, the Model Context Protocol (MCP) server integration resolves ${VAR} placeholders against the server's process.env during Zod schema validation of user-supplied MCP server URLs. Any authenticated user can create a malicious MCP server configuration with a URL pointing to an attacker-controlled domain containing environment variable references, causing the LibreChat server to connect to the attacker's server and transmit critical secrets such as CREDS_KEY, CREDS_IV, JWT_SECRET, and MONGO_URI in the request URL. This enables full compromise of the installation's cryptographic materials and database credentials without requiring administrative privileges. This is patched in version 0.8.4-rc1.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
danny-avilaLibreChat < 0.8.4-rc1 -

II. Public POCs for CVE-2026-32625

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Qwen3.6-35B-A3B · 6951 chars
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III. Intelligence Information for CVE-2026-32625

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Vendor Advisories for CVE-2026-32625 (1)

Same Patch Batch · danny-avila · 2026-06-02 · 4 CVEs total

CVE-2026-319427.1 HIGHLibreChat has IDOR in API Keys Management that allows any authenticated user to overwrite
CVE-2026-446536.5 MEDIUMLibreChat Shared MCP Server View Leaks Decrypted Admin Secrets
CVE-2026-44654LibreChat: Shared-agent editor can globally delete owner's file records — breaks owner's o

IV. Related Vulnerabilities

Same product: LibreChat
Same vendor: danny-avila
Same weakness: CWE-200

V. Comments for CVE-2026-32625

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