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    CVE-2026-44653

    LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, users with only `VIEW` access to an MCP server can retrieve the server's decrypted admin-managed secrets through `GET /api/mcp/servers` and `GET /api/mcp/servers/:serverName`. The returned config includes plaintext values for `apiKey.key` and `oauth.client_secret`. This allows viewers of a shared MCP server to exfiltrate the underlying provider credentials. Version 0.8..4 contains a patch. Other remediations include: never returning decrypted admin-managed secrets to non-owners; redacting apiKey.key and oauth.client_secret from all API responses consider returning only boolean presence indicators for secrets, similar to the auth-values route pattern; and, if owners need to edit configs without re-entering secrets, preserving secrets server-side and returning placeholders instead of plaintext.

    Published:Jun 2, 2026
    Last Modified:Jun 4, 2026
    EPS:Jun 2, 2026
    EPSS Score:0.00031
    CVSS Score:6.5

    Affected Products

    Vendor
    Danny-avila
    Product
    Libre Chat
    Vendor
    Librechat
    Product
    Librechat

    Exploits

    https://github.com/danny-avila/LibreChat/security/advisories/GHSA-6vqg-rgpm-qvf9https://github.com/danny-avila/LibreChat/security/advisories/GHSA-6vqg-rgpm-qvf9

    Related CVEs

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    CVE-2026-54036 (CVSS 5.3) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, the GET /api/a…
    CVE-2026-44654 (CVSS 5.7) — LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High