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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Librechat | Librechat | < 0.8.4 |
Related Weaknesses (CWE)
References
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwxExploitMitigationVendor Advisory
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwxExploitMitigationVendor Advisory
FAQ
What is CVE-2026-32625?
CVE-2026-32625 is a vulnerability with a CVSS score of 9.6 (CRITICAL). 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 agai...
How severe is CVE-2026-32625?
CVE-2026-32625 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-32625?
Check the references section above for vendor advisories and patch information. Affected products include: Librechat Librechat.