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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
netease-youdao QAnything unaffected
Version Status Constraints
0 affected ≤ 2.0.0

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Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/netease-youdao/QAnything cve-icon cve-icon
https://github.com/netease-youdao/QAnything/blob/v2.0.0/qanything_kernel/qanything_server/handler.py cve-icon cve-icon
https://github.com/netease-youdao/QAnything/issues/670 cve-icon cve-icon
https://www.vulncheck.com/advisories/qanything-2.0.0-unauthenticated-cross-user-file-disclosure cve-icon cve-icon
History

Fri, 04 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
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.
Title QAnything 2.0.0 Unauthenticated Cross-User File Disclosure
First Time appeared Youdao
Youdao qanything
Weaknesses CWE-306
CPEs cpe:2.3:a:youdao:qanything:*:*:*:*:*:*:*:*
Vendors & Products Youdao
Youdao qanything
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-04T14:32:26.116Z

Reserved: 2026-09-04T13:32:36.997Z

Link: CVE-2026-85671

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-04T15:17:45.150

Modified: 2026-09-04T15:17:45.150

Link: CVE-2026-85671

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T16:00:05Z

Weaknesses