{"id":"CVE-2026-110775","summary":"Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access","details":"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.","modified":"2026-10-15T10:48:09.249540929Z","published":"2026-10-14T18:48:05.425Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110775.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110775.json"},{"type":"PACKAGE","url":"https://github.com/ModelEngine-Group/nexent"},{"type":"ARTICLE","url":"https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177"},{"type":"EVIDENCE","url":"https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110775"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/modelengine-group/nexent","events":[{"introduced":"0"},{"last_affected":"519b9b17c7f4cbc623256ac318ea96a20f33772e"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"last_affected":"2.7.0"}]}}],"versions":["v2.7.0","v2.6.1","v2.6.0","v2.5.1","v2.4.1","v2.4.0","v2.3.0","v2.2.3","v2.2.1","v2.2.2","v2.1.1","v2.2.0","v2.1.0","v2.0.2","v2.0.1","v2.0.0","v1.8.1","v1.8.0.2","v1.8.0.1-hotfix","v1.8.0.1","v1.8.0","v1.7.10-hotfix","v1.7.10","v1.7.9.3","v1.7.9.2","v1.7.9.1","v1.7.9","v1.7.8.1","v1.7.4","v1.7.8","v1.7.7.1","v1.7.7","v1.7.6","v1.7.5.3-hotfix","v1.7.5.3","v1.7.5.2","v1.7.5.1","v1.7.5","v1.7.4.1","v1.7.3","v1.7.2.2","v1.7.2","v1.7.1","v1.7.0","v1.6.0","v1.3.0","v1.2.0","v1.1.0","v1.0.0","v0.2.0","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110775.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}