CVE-2026-110775

Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access

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.

Affected

ModelEngine-Group · nexent

CVSS v4.0 VULNCHECK

7.1 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 VULNCHECK

6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.25% chance of exploitation in the next 30 days, 15th percentile

Published

2026-10-14

Updated

2026-10-16

Proof-of-concept exploits (1)

• https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read

References

• CVE Record
• NVD entry