CVE-2026-110775
Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-639 |
| Vendor | modelengine-group |
| Product | nexent |
| Published | Oct 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
ModelEngine-Group / nexent
0 ≤ 2.7.0
References
hackmd.io: https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read github.com: https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177 github.com: https://github.com/ModelEngine-Group/nexent vulncheck.com: https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access
Credits
hieuPenguinnn