{"id":"CVE-2026-110775","revision":"b263f890633e4c2db825a0d98e4070ce","records":[{"revision":"b263f890633e4c2db825a0d98e4070ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-110775","aliases":[],"title":"Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access","description":"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.","state":0,"publishedAt":"2026-10-14T18:48:05.425+00:00","modifiedAt":"2026-10-16T17:15:27.094+00:00","affected":[{"ecosystem":"https://github.com/ModelEngine-Group/nexent","name":"nexent","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ModelEngine-Group\",\n                    \"product\": \"nexent\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"2.7.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"collectionURL\": \"https://github.com/ModelEngine-Group/nexent\",\n                    \"packageURL\": \"pkg:github/ModelEngine-Group/nexent\",\n                    \"repo\": \"https://github.com/ModelEngine-Group/nexent\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read","https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177","https://github.com/ModelEngine-Group/nexent","https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110775","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-110775","identifiers":["CVE-2026-110775"]},"retained":false,"historicalAffected":[]}],"coverage":[]}