{"id":"CVE-2026-110775","title":"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","summary":"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 mu…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-639"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:17:13.790","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-110775","references":[{"url":"https://github.com/ModelEngine-Group/nexent","label":"disclosure@vulncheck.com"},{"url":"https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177","label":"disclosure@vulncheck.com"},{"url":"https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-14T19:49:57.613Z","vendor":"ModelEngine-Group","product":"nexent","affected":["nexent <= 2.7.0"],"slug":"CVE-2026-110775","body":"## Overview\n\nNexent 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}