{"id":"CVE-2026-110775","published":"2026-10-14T19:17:13.790","lastModified":"2026-10-16T18:17:33.283","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.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwes":["CWE-639"],"vendors":[],"products":[],"references":[{"url":"https://github.com/ModelEngine-Group/nexent","tags":[]},{"url":"https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177","tags":[]},{"url":"https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read","tags":[]},{"url":"https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access","tags":[]}],"exploitRefs":[{"url":"https://github.com/ModelEngine-Group/nexent","tags":[]},{"url":"https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177","tags":[]}],"hasPoc":true,"ai":null}