CVE-2026-42073

{"id": "CVE-2026-42073", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42073", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-02T17:37:51.060222Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "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"}, "impactScore": 3.6, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "Gitlawb", "product": "openclaude", "versions": [{"status": "affected", "version": "< 0.5.1"}]}]}], "published": "2026-06-02T17:16:31.910", "references": [{"url": "https://github.com/Gitlawb/openclaude/commit/739b8d1f40fde0e401a5cbd2b9a55d88bd5124ad", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Gitlawb/openclaude/releases/tag/v0.5.1", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/Gitlawb/openclaude/security/advisories/GHSA-c73c-x77g-854r", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-352"}, {"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"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 \u2014 without knowing the state value at all. This issue has been patched in version 0.5.1."}, {"lang": "es", "value": "OpenClaude es una interfaz de l\u00ednea de comandos de agente de codificaci\u00f3n de c\u00f3digo abierto para proveedores de modelos locales y en la nube. Antes de la versi\u00f3n 0.5.1, el flujo de autenticaci\u00f3n 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 par\u00e1metro de estado contra un valor almacenado internamente. Sin embargo, debido a un fallo l\u00f3gico en el orden de los condicionales, un atacante puede omitir completamente esta verificaci\u00f3n y forzar el apagado del servidor, sin conocer en absoluto el valor del estado. Este problema ha sido parcheado en la versi\u00f3n 0.5.1."}], "lastModified": "2026-07-22T19:10:00.120", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gitlawb:openclaude:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F2107920-62CC-4630-84F0-724AB1B17015", "versionEndExcluding": "0.5.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}