Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR)_CVE-2026-41277

{
    "lastseen": "",
    "description": "Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Mass Assignment vulnerability in the DocumentStore creation endpoint allows authenticated users to control the primary key (id) and internal state fields of DocumentStore entities. Because the service uses repository.save() with a client-supplied primary key, the POST create endpoint behaves as an implicit UPSERT operation. This enables overwriting existing DocumentStore objects. In multi-workspace or multi-tenant deployments, this can lead to cross-workspace object takeover and broken object-level authorization (IDOR), allowing an attacker to reassign or modify DocumentStore objects belonging to other workspaces. This vulnerability is fixed in 3.1.0.",
    "published": "2026-04-23T19:48:57.967Z",
    "modified": "2026-04-23T19:48:57.967Z",
    "type": "cve",
    "title": "Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR)",
    "source": "GitHub_M",
    "references": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-3prp-9gf7-4rxx",
    "id": "CVE-2026-41277",
    "bulletinFamily": "",
    "cwe": [
        "CWE-284",
        "CWE-639",
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "FlowiseAI Flowise < 3.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
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        "confidentialityImpact": "",
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        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
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    "product": "Flowise",
    "version": "< 3.1.0",
    "vendor": "FlowiseAI",
    "ai_description": "",
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}