CVE-2026-110775CWE-639

CVE-2026-110775

Medium · published October 14, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
15.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
7.1 · 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
EPSS
0.00249 · 15.3th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-14T23:17Z
References (4)
https://github.com/ModelEngine-Group/nexent · [email protected]https://github.com/ModelEngine-Group/nexent/blob/90bf1a5dbb1eb16bb4a28c2407ed4b6eda9a09bf/backend/services/file_management_service.py#L177 · [email protected]https://hackmd.io/@hieuPenguinnn/nexent-knowledge-base-cross-tenant-file-read · [email protected]https://www.vulncheck.com/advisories/nexent-through-2.7.0-cross-tenant-knowledge-base-file-read-via-check-file-access · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 18:48Z
    Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
    cvelistv5
  • 14 OCT 18:48Z
    Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
    cvelistv5