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    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2026-18636",
        "assignerOrgId": "00000000-0000-4000-9000-000000000000",
        "requesterUserId": "00000000-0000-4000-9000-000000000000",
        "serial": 1,
        "state": "PUBLISHED"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "00000000-0000-4000-9000-000000000000"
            },
            "title": "Velociraptor VFSGetBuffer API path deny list bypass",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-288",
                            "description": "CWE-288 Authentication bypass using an alternate path or channel",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Rapid7",
                    "product": "Velociraptor",
                    "platforms": [
                        "Linux"
                    ],
                    "packageName": "Velociraptor",
                    "repo": "https://github.com/Velocidex/velociraptor/",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "0.77.2",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission.",
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                            "value": "The Velociraptor gRPC API has a VFSGetBuffer endpoint which allows reading files from the datastore. To prevent users from reading sensitive files or accessing other orgs, the requested path is prefix checked against a list of denied prefixes. This prefix check can be bypassed allowing a user to access usually denied files. If the user has read permission in the ROOT org, this allows access to other orgs, in which the user may not have permission."
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-18636/"
                },
                {
                    "url": "https://github.com/Velocidex/velociraptor/commit/ed6f5e7c3e014e84a6b11087d2238d1e457a70c2"
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ],
                    "cvssV3_1": {
                        "version": "3.1",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 6.8,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N"
                    }
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "To exploit this the user must have the \"reader\" role on the ROOT org.",
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                            "type": "text/html",
                            "base64": false,
                            "value": "To exploit this the user must have the \"reader\" role on the ROOT org. "
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                    ]
                }
            ],
            "workarounds": [
                {
                    "lang": "en",
                    "value": "As  documented https://docs.velociraptor.app/docs/deployment/security/#the-root-org ,  the root org is more privileged than other orgs. You should only give trusted users access to the root org.",
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                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Itay Vardi",
                    "type": "finder"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
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    }
}