Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers_CVE-2025-8943

{
    "lastseen": "",
    "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.",
    "published": "2025-08-14T09:54:22.531Z",
    "modified": "2025-08-14T09:54:22.531Z",
    "type": "cve",
    "title": "Unsupervised OS command execution leads to remote code execution by unauthenticated network attackers",
    "source": "JFROG",
    "references": "https://research.jfrog.com/vulnerabilities/flowise-os-command-remote-code-execution-jfsa-2025-001380578/",
    "id": "CVE-2025-8943",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "  0",
    "sourceHref": "",
    "cvss": {
        "score": 9.8,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "",
    "version": "0",
    "vendor": "",
    "ai_description": "The vulnerability allows unauthenticated network attackers to execute arbitrary OS commands on Flowise installations due to lack of authentication and role-based access controls in versions before 3.0.1.",
    "ai_severity": "CRITICAL",
    "ai_vendor": "Flowise",
    "ai_product": "Flowise",
    "ai_version": "before 3.0.1",
    "ai_score": 9.8
}