---
cve: "CVE-2026-85671"
severity: "HIGH"
cvss: 8.7
epss: "0.4%"
vendor: "netease-youdao"
kev: false
exploited: false
published: "2026-09-04 15:17:45"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-25T21:29:47+02:00"
---

# CVE-2026-85671

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

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

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-85671) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_