Flowise – Mass Assignment in PUT /api/v1/user Allows Password Hash Override_CVE-2026-56276

{
    "lastseen": "",
    "description": "Flowise before 3.1.2 contains a mass assignment vulnerability in the PUT /api/v1/user endpoint that allows authenticated users to directly modify the credential field without validation. Attackers can bypass password change verification and session invalidation by supplying a crafted password hash, establishing persistent account access after temporary session compromise.",
    "published": "2026-06-20T15:24:44.035Z",
    "modified": "2026-06-20T15:24:44.035Z",
    "type": "cve",
    "title": "Flowise - Mass Assignment in PUT /api/v1/user Allows Password Hash Override",
    "source": "VulnCheck",
    "references": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-59fh-9f3p-7m39\nhttps://www.vulncheck.com/advisories/flowise-mass-assignment-in-put-api-v1-user-allows-password-hash-override",
    "id": "CVE-2026-56276",
    "bulletinFamily": "",
    "cwe": [
        "CWE-915"
    ],
    "cvelist": null,
    "sourceData": "Flowise Flowise 0",
    "sourceHref": "",
    "cvss": {
        "score": 6,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}