Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association_CVE-2026-41267

{
    "lastseen": "",
    "description": "Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.",
    "published": "2026-04-23T19:12:26.765Z",
    "modified": "2026-04-23T19:12:26.765Z",
    "type": "cve",
    "title": "Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association",
    "source": "GitHub_M",
    "references": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj",
    "id": "CVE-2026-41267",
    "bulletinFamily": "",
    "cwe": [
        "CWE-639",
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "FlowiseAI Flowise < 3.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/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": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Flowise",
    "version": "< 3.1.0",
    "vendor": "FlowiseAI",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}