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CVE-2026-42073

Estado: AnalizadaMedia (6.5)—

OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Gitlawb — Openclaude

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-42073",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-42073",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-02T17:37:51.060222Z"
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 2.8
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  "published": "2026-06-02T17:16:31.910",
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      "description": [
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          "value": "CWE-352"
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          "value": "CWE-400"
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      "lang": "en",
      "value": "OpenClaude is an open-source coding-agent command line interface for cloud and local model providers. Prior to version 0.5.1, the OpenClaude MCP authentication flow starts a temporary local HTTP server to handle OAuth callbacks. To prevent CSRF attacks, the server validates a state parameter against an internally stored value. However, due to a logic flaw in the order of conditionals, an attacker can completely bypass this check and force the server to shut down — without knowing the state value at all. This issue has been patched in version 0.5.1."
    },
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      "value": "OpenClaude es una interfaz de línea de comandos de agente de codificación de código abierto para proveedores de modelos locales y en la nube. Antes de la versión 0.5.1, el flujo de autenticación MCP de OpenClaude inicia un servidor HTTP local temporal para manejar las devoluciones de llamada de OAuth. Para prevenir ataques CSRF, el servidor valida un parámetro de estado contra un valor almacenado internamente. Sin embargo, debido a un fallo lógico en el orden de los condicionales, un atacante puede omitir completamente esta verificación y forzar el apagado del servidor, sin conocer en absoluto el valor del estado. Este problema ha sido parcheado en la versión 0.5.1."
    }
  ],
  "lastModified": "2026-07-22T19:10:00.120",
  "configurations": [
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