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CVE-2026-85671— QAnything 2.0.0 Unauthenticated Cross-User File Disclosure

Quick assessment

Affected
netease-youdao QAnything
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.

NetEase QAnything是中国NetEase公司的一个支持任意文件格式的本地知识库问答系统。 NetEase QAnything 2.0.0及之前版本存在授权问题漏洞，该漏洞源于/api/local_doc_qa/get_file_base64和/api/local_doc_qa/get_doc端点存在身份验证绕过，可能导致未经身份验证的攻击者访问任意上传的文件或文档，枚举文件标识符并检索base64编码文件或解析的文档片段，无需所有权验证即可泄露跨租户知识库内容。

CVSS 7.5 · High EPSS 0.36% · P30

Affected Version Matrix 1

VendorProduct Version RangeStatus
netease-youdao QAnything ≤ 2.0.0 affected
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I. Basic Information for CVE-2026-85671

Vulnerability Information
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Vulnerability Title
QAnything 2.0.0 Unauthenticated Cross-User File Disclosure
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
NetEase QAnything 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NetEase QAnything是中国NetEase公司的一个支持任意文件格式的本地知识库问答系统。 NetEase QAnything 2.0.0及之前版本存在授权问题漏洞，该漏洞源于/api/local_doc_qa/get_file_base64和/api/local_doc_qa/get_doc端点存在身份验证绕过，可能导致未经身份验证的攻击者访问任意上传的文件或文档，枚举文件标识符并检索base64编码文件或解析的文档片段，无需所有权验证即可泄露跨租户知识库内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
netease-youdao QAnything 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-85671

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III. Intelligence Information for CVE-2026-85671

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Vendor Advisories for CVE-2026-85671 (1)

Security Blog Posts for CVE-2026-85671 (1)

IV. Related Vulnerabilities

Same vendor: netease-youdao
Same weakness: CWE-306

V. Comments for CVE-2026-85671

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