# CVE-2026-85671

## Summary

- **CVE ID:** CVE-2026-85671
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-306
- **Published:** Sep 4, 2026
- **Last Modified:** Sep 14, 2026

## Description

QAnything 2.0.0 contains an authentication bypass vulnerability in the /api/local_doc_qa/get_file_base64 and /api/local_doc_qa/get_doc endpoints that allows unauthenticated attackers to access any uploaded file or document. Attackers can enumerate file identifiers through unauthenticated endpoints and retrieve base64-encoded files or parsed document chunks without ownership verification to disclose cross-tenant knowledge base content.

## Affected Products

- netease-youdao — QAnything (0)

## References

- [CNA](https://github.com/netease-youdao/QAnything/issues/670)
- [CNA](https://github.com/netease-youdao/QAnything)
- [CNA](https://github.com/netease-youdao/QAnything/blob/v2.0.0/qanything_kernel/qanything_server/handler.py)
- [CNA](https://www.vulncheck.com/advisories/qanything-2.0.0-unauthenticated-cross-user-file-disclosure)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 30.0

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._