Flowise – Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint_CVE-2025-71333

{
    "lastseen": "",
    "description": "Flowise through 2.2.4 contains an unauthenticated arbitrary file upload vulnerability in the /api/v1/attachments endpoint when storageType is set to local. Attackers can exploit path traversal in the chatId and chatflowId parameters to upload malicious files to arbitrary directories, potentially enabling remote code execution and server compromise.",
    "published": "2026-06-25T21:41:04.896Z",
    "modified": "2026-06-25T21:41:04.896Z",
    "type": "cve",
    "title": "Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint",
    "source": "VulnCheck",
    "references": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-h42x-xx2q-6v6g\nhttps://www.vulncheck.com/advisories/flowise-arbitrary-file-upload-via-unauthenticated-api-v1-attachments-endpoint",
    "id": "CVE-2025-71333",
    "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",
        "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": "Unauthenticated arbitrary file upload vulnerability via /api/v1/attachments endpoint",
    "ai_severity": "Critical",
    "ai_vendor": "Flowise",
    "ai_product": "Flowise",
    "ai_version": "2.2.4 and prior",
    "ai_score": 9.3
}