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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ModelEngine-Group nexent unaffected
Version Status Constraints
0 affected ≤ 2.7.0

No data.

No data.

No data.

Project Subscriptions

Vendors Products
Nexent Subscribe
Nexent Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/ModelEngine-Group/nexent cve-icon cve-icon
https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177 cve-icon cve-icon
https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read cve-icon cve-icon
https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access cve-icon cve-icon
History

Wed, 14 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
First Time appeared Nexent
Nexent nexent
Weaknesses CWE-639
CPEs cpe:2.3:a:nexent:nexent:*:*:*:*:*:*:*:*
Vendors & Products Nexent
Nexent nexent
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 7.1, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-14T18:48:05.425Z

Reserved: 2026-10-14T17:27:38.036Z

Link: CVE-2026-110775

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T19:17:13.790

Modified: 2026-10-14T19:17:13.790

Link: CVE-2026-110775

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses