Flowise – Arbitrary File Access via Missing Chat Flow ID Validation_CVE-2025-71334

{
    "lastseen": "",
    "description": "Flowise before 3.0.6 (affected versions 2.2.8 and earlier) contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.",
    "published": "2026-06-25T21:41:05.552Z",
    "modified": "2026-06-25T21:41:05.552Z",
    "type": "cve",
    "title": "Flowise - Arbitrary File Access via Missing Chat Flow ID Validation",
    "source": "VulnCheck",
    "references": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849\nhttps://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f\nhttps://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7\nhttps://www.vulncheck.com/advisories/flowise-arbitrary-file-access-via-missing-chat-flow-id-validation",
    "id": "CVE-2025-71334",
    "bulletinFamily": "",
    "cwe": [
        "CWE-73"
    ],
    "cvelist": null,
    "sourceData": "Flowise Flowise 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/MAV:N/MAC:L/MPR:N/MUI:N/MS:U/MC:H/MI:H/MA:H",
        "version": "4.0"
    },
    "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": "Flowise",
    "version": "0",
    "vendor": "Flowise",
    "ai_description": "Arbitrary file access vulnerability due to missing validation of chatflowId and chatId parameters, potentially leading to remote code execution.",
    "ai_severity": "Critical",
    "ai_vendor": "FlowiseAI",
    "ai_product": "Flowise",
    "ai_version": "2.2.8 and earlier, before 3.0.6",
    "ai_score": 9.3
}