Vulnerability-Lookup

CVE-2026-32625 (GCVE-0-2026-32625)

Vulnerability from cvelistv5 – Published: 2026-06-02 22:35 – Updated: 2026-06-03 14:07

Title

LibreChat Exfiltrates Server Secrets via MCP Server URL Injection

Summary

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.

Severity

9.6 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/danny-avila/LibreChat/security…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
danny-avila	LibreChat	Affected: < 0.8.4-rc1

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-32625",
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      "title": "LibreChat Exfiltrates Server Secrets via MCP Server URL Injection",
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FKIE_CVE-2026-32625

Vulnerability from fkie_nvd - Published: 2026-06-02 23:16 - Updated: 2026-07-22 19:10

Severity

9.6 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwx	Exploit, Mitigation, Vendor Advisory
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/danny-avila/LibreChat/security/advisories/GHSA-4pcc-j6m6-wcwx	Exploit, Mitigation, Vendor Advisory

Impacted products

	Vendor	Product	Version
	librechat	librechat	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "LibreChat",
          "vendor": "danny-avila",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.8.4-rc1"
            }
          ]
        }
      ],
      "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, the Model Context Protocol (MCP) server integration resolves ${VAR} placeholders against the server\u0027s 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\u0027s 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\u0027s cryptographic materials and database credentials without requiring administrative privileges. This is patched in version 0.8.4-rc1."
    },
    {
      "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, la integraci\u00f3n del servidor del Protocolo de Contexto del Modelo (MCP) resuelve los marcadores de posici\u00f3n ${VAR} contra el process.env del servidor durante la validaci\u00f3n del esquema Zod de las URL de servidor MCP proporcionadas por el usuario. Cualquier usuario autenticado puede crear una configuraci\u00f3n de servidor MCP maliciosa con una URL que apunte a un dominio controlado por un atacante que contenga referencias a variables de entorno, lo que hace que el servidor de LibreChat se conecte al servidor del atacante y transmita secretos cr\u00edticos como CREDS_KEY, CREDS_IV, JWT_SECRET y MONGO_URI en la URL de la solicitud. Esto permite el compromiso total de los materiales criptogr\u00e1ficos de la instalaci\u00f3n y las credenciales de la base de datos sin requerir privilegios administrativos. Esto est\u00e1 parcheado en la versi\u00f3n 0.8.4-rc1."
    }
  ],
  "id": "CVE-2026-32625",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.6,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
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        "impactScore": 5.8,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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  "references": [
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        "Mitigation",
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      ],
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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        }
      ],
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-32625 (GCVE-0-2026-32625)

FKIE_CVE-2026-32625

Tags

Sightings

Nomenclature