CVE-2026-30861

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{"affected": [{"affectedData": [{"product": "WeKnora", "vendor": "Tencent", "versions": [{"status": "affected", "version": ">= 0.2.5, < 0.2.10"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:tencent:weknora:*:*:*:*:*:*:*:*", "matchCriteriaId": "13FE8D37-06C9-4406-AE17-C35A7C66CC0C", "versionEndExcluding": "0.2.10", "versionStartIncluding": "0.2.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. From version 0.2.5 to before version 0.2.10, an unauthenticated remote code execution (RCE) vulnerability exists in the MCP stdio configuration validation. The application allows unrestricted user registration, meaning any attacker can create an account and exploit the command injection flaw. Despite implementing a whitelist for allowed commands (npx, uvx) and blacklists for dangerous arguments and environment variables, the validation can be bypassed using the -p flag with npx node. This allows any attacker to execute arbitrary commands with the application's privileges, leading to complete system compromise. This issue has been patched in version 0.2.10."}, {"lang": "es", "value": "WeKnora es un framework impulsado por LLM dise\u00f1ado para la comprensi\u00f3n profunda de documentos y la recuperaci\u00f3n sem\u00e1ntica. Desde la versi\u00f3n 0.2.5 hasta antes de la versi\u00f3n 0.2.10, existe una vulnerabilidad de ejecuci\u00f3n remota de c\u00f3digo (RCE) no autenticada en la validaci\u00f3n de la configuraci\u00f3n stdio de MCP. La aplicaci\u00f3n permite el registro de usuarios sin restricciones, lo que significa que cualquier atacante puede crear una cuenta y explotar la falla de inyecci\u00f3n de comandos. A pesar de implementar una lista blanca para comandos permitidos (npx, uvx) y listas negras para argumentos peligrosos y variables de entorno, la validaci\u00f3n puede ser eludida usando la bandera -p con npx node. Esto permite a cualquier atacante ejecutar comandos arbitrarios con los privilegios de la aplicaci\u00f3n, lo que lleva a un compromiso completo del sistema. Este problema ha sido parcheado en la versi\u00f3n 0.2.10."}], "id": "CVE-2026-30861", "lastModified": "2026-06-17T10:33:03.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "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:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30861", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-09T17:58:51.217526Z", "version": "2.0.3"}}]}, "published": "2026-03-07T17:15:53.980", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/Tencent/WeKnora/security/advisories/GHSA-r55h-3rwj-hcmg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

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