Missing Authorization Vulnerability in Nexent Knowledge Base Files
CVE-2026-110775

7.1HIGH

Key Information:

Vendor

Modelengine-group

Status
NeXen Projectt
Vendor
CVE Published:
14 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-110775?

Nexent versions up to 2.7.0 exhibit a vulnerability in the check_file_access function, allowing authenticated users to bypass tenant restrictions. This issue enables users to access other tenants' knowledge-base files, potentially exposing sensitive information. In a multi-tenant deployment, attackers can exploit this by utilizing GET requests to retrieve presigned URLs or download documents belonging to other tenants. As a result, this vulnerability poses a significant risk for organizations relying on Nexent for secure file management.

Affected Version(s)

nexent 0 <= 2.7.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-110775 - Proof of Concept

References

https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cr...
technical-descriptionexploit
https://github.com/ModelEngine-Group/nexent/blob/90bf1a5d...
technical-description
https://github.com/ModelEngine-Group/nexent
product

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

hieuPenguinnn
.