CVE-2026-32625

{
  "id": "CVE-2026-32625",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2026-06-02T23:16:35.947",
  "lastModified": "2026-06-03T16:16:27.873",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 5.8
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-200"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwx",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwx",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}