CVE-2026-44653

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{"affected": [{"affectedData": [{"product": "LibreChat", "vendor": "danny-avila", "versions": [{"status": "affected", "version": "< 0.8.4"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*", "matchCriteriaId": "63FE1740-F55B-4D56-92E5-407F97DA3475", "versionEndExcluding": "0.8.4", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "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, 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."}, {"lang": "es", "value": "LibreChat es un clon mejorado de ChatGPT que soporta m\u00faltiples proveedores de IA. En versiones hasta la 0.8.3 inclusive, los usuarios con acceso solo de 'VIEW' a un servidor MCP pueden recuperar los secretos descifrados administrados por el administrador del servidor a trav\u00e9s de 'GET /api/mcp/servers' y 'GET /api/mcp/servers/:serverName'. La configuraci\u00f3n devuelta incluye valores en texto plano para 'apiKey.key' y 'oauth.client_secret'. Esto permite a los espectadores de un servidor MCP compartido exfiltrar las credenciales del proveedor subyacente. La versi\u00f3n 0.8..4 contiene un parche. Otras soluciones incluyen: nunca devolver secretos descifrados administrados por el administrador a no propietarios; redactar 'apiKey.key' y 'oauth.client_secret' de todas las respuestas de la API; considerar devolver solo indicadores de presencia booleanos para los secretos, similar al patr\u00f3n de ruta de valores de autenticaci\u00f3n; y, si los propietarios necesitan editar configuraciones sin volver a introducir secretos, preservar los secretos en el lado del servidor y devolver marcadores de posici\u00f3n en lugar de texto plano."}], "id": "CVE-2026-44653", "lastModified": "2026-07-21T19:10:00.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44653", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-03T18:56:30.034562Z", "version": "2.0.3"}}]}, "published": "2026-06-02T23:16:38.123", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-6vqg-rgpm-qvf9"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/danny-avila/LibreChat/security/advisories/GHSA-6vqg-rgpm-qvf9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-201"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.8.4)"}}], "enrichment": {"confidence": 98.0, "confidence_source": "matching", "scores": [{"score": 98.0, "source": "matching"}]}, "original": {"product": "LibreChat", "source": "cna", "vendor": "danny-avila"}, "product": "libre_chat", "vendor": "danny-avila"}], "created": "2026-06-03T04:15:24.752485+00:00", "updated": "2026-06-04T21:00:15.404842+00:00", "vendors": ["danny-avila", "danny-avila$PRODUCT$libre_chat"]}