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Thursday, 29 October 2026
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Incident database

LibreChat MCP integration flaws leak server secrets and allow cross-agent file deletion

Three vulnerabilities in LibreChat versions up to and including 0.8.3 (CVE-2026-32625, CVE-2026-44653, CVE-2026-44654) let authenticated users exfiltrate server environment secrets such as CREDS_KEY, JWT_SECRET and MONGO_URI via malicious MCP server URLs, read decrypted admin-managed MCP credentials with only VIEW access, and delete an owner's files globally from a shared agent. The issues are patched in versions 0.8.4-rc1 and 0.8.4.

Disclosed 2 June 2026 · Record updated 1 October 2026

Impact

Any authenticated user could obtain the installation's cryptographic keys and database credentials, and MCP server viewers could retrieve plaintext provider API keys and OAuth client secrets; shared-agent editors could destroy files used by the owner's other private agents.

Our coverage

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Sources

  1. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-32625
  2. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-44653
  3. nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-44654