{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-110775",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-10-14T17:27:38.036Z",
        "datePublished": "2026-10-14T18:48:05.425Z",
        "dateUpdated": "2026-10-14T18:48:05.425Z"
    },
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                "dateUpdated": "2026-10-14T18:48:05.425Z"
            },
            "datePublic": "2026-10-14T00:00:00.000Z",
            "title": "Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Nexent through 2.7.0 contains a missing authorization vulnerability in check_file_access that allows authenticated users to read other tenants' knowledge-base files by skipping tenant comparison for knowledge_base/ reads. Attackers in multi-tenant deployments can list objects via GET /file/storage for presigned URLs or use GET /file/download/{object_name} to download other tenants' source documents."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Authorization Bypass Through User-Controlled Key",
                            "cweId": "CWE-639",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "ModelEngine-Group",
                    "product": "nexent",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "2.7.0",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ],
                    "collectionURL": "https://github.com/ModelEngine-Group/nexent",
                    "packageURL": "pkg:github/ModelEngine-Group/nexent",
                    "repo": "https://github.com/ModelEngine-Group/nexent"
                }
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                                    "versionEndIncluding": "2.7.0"
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                        "version": "4.0",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.1,
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "NONE",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM"
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            "references": [
                {
                    "url": "https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read",
                    "tags": [
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                {
                    "url": "https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177",
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                    "tags": [
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                {
                    "name": "VulnCheck Advisory: Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access",
                    "tags": [
                        "third-party-advisory"
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                    "url": "https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "hieuPenguinnn",
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                "engine": "vulncheck-endgame"
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        }
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}