{"id":"CVE-2025-8943","state":"PUBLISHED","title":"Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers","description":"The Custom MCPs feature is designed to execute OS commands, for instance, using tools like `npx` to spin up local MCP Servers. However, Flowise's inherent authentication and authorization model is minimal and lacks role-based access controls (RBAC). Furthermore, in Flowise versions before 3.0.1 the default installation operates without authentication unless explicitly configured. This combination allows unauthenticated network attackers to execute unsandboxed OS commands.","publishedAt":"2025-08-14T09:54:22.531Z","updatedAt":"2025-08-18T16:47:58.906Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"JFROG"},"assigner":"JFROG","products":["flowise"],"affected":[{"packageName":"flowise","versions":[{"version":"0","status":"affected","lessThan":"3.0.1","versionType":"semver"}],"collectionURL":"https://www.npmjs.com"}],"references":["https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/"],"weaknesses":["CWE-306","CWE-862"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/8xxx/CVE-2025-8943.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-8943","state":"PUBLISHED","datePublished":"2025-08-14T09:54:22.531Z","dateUpdated":"2025-08-18T16:47:58.906Z","assignerShortName":"JFROG","assignerOrgId":"48a46f29-ae42-4e1d-90dd-c1676c1e5e6d","dateReserved":"2025-08-13T13:30:26.091Z"},"containers":{"cna":{"title":"Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers","descriptions":[{"lang":"en","value":"The Custom MCPs feature is designed to execute OS commands, for instance, using tools like `npx` to spin up local MCP Servers. However, Flowise's inherent authentication and authorization model is minimal and lacks role-based access controls (RBAC). Furthermore, in Flowise versions before 3.0.1 the default installation operates without authentication unless explicitly configured. This combination allows unauthenticated network attackers to execute unsandboxed OS commands."}],"affected":[{"packageName":"flowise","versions":[{"version":"0","status":"affected","lessThan":"3.0.1","versionType":"semver"}],"collectionURL":"https://www.npmjs.com"}],"references":[{"url":"https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/","tags":["third-party-advisory"]}],"metrics":[{"cvssV3_1":{"baseScore":9.8,"baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"providerMetadata":{"shortName":"JFROG","orgId":"48a46f29-ae42-4e1d-90dd-c1676c1e5e6d","dateUpdated":"2025-08-14T09:54:22.531Z"},"source":{"discovery":"EXTERNAL"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-08-14T13:36:14.464567Z","id":"CVE-2025-8943","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-306","type":"CWE","lang":"en","description":"CWE-306 Missing Authentication for Critical Function"}]},{"descriptions":[{"cweId":"CWE-862","type":"CWE","lang":"en","description":"CWE-862 Missing Authorization"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-08-18T16:47:58.906Z"}}]}}}