{"schema":"threatline.record/2","record":{"id":"CVE-2026-110775","aliases":[],"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.","categories":["Unclassified"],"product":"nexent","vendor":"ModelEngine-Group","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-110775","source_modified_at":"2026-10-16T17:15:27.094Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"nexent","vendor":"ModelEngine-Group","versions":[{"version":"0","lessThanOrEqual":"2.7.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00249,"percentile":0.15316,"score_date":"2026-10-23"},"published_at":"2026-10-14T18:48:05.425Z","modified_at":"2026-10-16T17:15:27.094Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-110775","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-16T17:15:27.094Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-110775","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read","tags":["technical-description","exploit"]},{"source":"CVE List","url":"https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/ModelEngine-Group/nexent","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-16T16:27:52.820838Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-16T17:15:27.094Z","content_hash":"a48f0c471971c5831bca0030bef261a32b292eac317fa790b682d7e927ede116"}}