CVE-2026-44653 - LibreChat Shared MCP Server View Leaks Decrypted Admin Secrets

CVE-2026-44653 - LibreChat Shared MCP Server View Leaks Decrypted Admin Secrets

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/03/2026 - 05:27
CVE ID :CVE-2026-44653
Published : June 2, 2026, 11:16 p.m. | 3 hours, 46 minutes ago
Description :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.
Severity: 6.5 | MEDIUM
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