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CVE-2026-110775— Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access

Quick assessment

Affected
ModelEngine-Group nexent
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nexent 2.7.0 及之前版本在 函数中存在一个缺失的权限校验漏洞，允许已认证的用户通过跳过租户比对，读取其他租户的知识库文件。在多租户部署环境中，攻击者可以通过 GET /file/storage 获取预签名 URL 来列出其他租户的对象，或使用 GET /file/download/{object_name} 下载其他租户的源文档。

CVSS 6.5 · Medium EPSS 0.25% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
ModelEngine-Group nexent ≤ 2.7.0 affected
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I. Basic Information for CVE-2026-110775

Vulnerability Information
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Vulnerability Title
Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ModelEngine-Group nexent 0 ~ 2.7.0 -

II. Public POCs for CVE-2026-110775

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-110775

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Other References for CVE-2026-110775 (3)

IV. Related Vulnerabilities

Same weakness: CWE-639

V. Comments for CVE-2026-110775

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