---
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
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.